Infinity_QX4_1998-2003

TroubleCodes (10 of 11)

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3.5L V6 - Auto



Trouble Code: P0505

Idle Air Control, Auxiliary Air Control Valve:

Trouble Code Conditions: Engine started, engine at hot idle speed for 30 seconds, and the PCM detected the IAC control volume was incorrect, or after the IAC valve was commanded open and closed, it detected the change in air volume did not correlate to the engine air volume (determined by comparing the air volume to the volume of the MAF sensor signal).

Possible Causes:



IACV-AAC valve control circuit is open or shorted to ground
 
IACV-AAC valve control circuit is shorted to system power (B+)
 
IACV-AAC valve is damaged or has failed
 
PCM is damaged or has failed
 

Trouble Code: P0510

Closed Throttle Position Switch Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a speed of 5-20 mph, and the PCM did not detect any change of status in the Closed Throttle Position switch circuit during the CCM test period.

Possible Causes:



Closed throttle position switch connector is damaged or loose
 
Closed throttle position switch signal circuit is open or grounded
 
Closed throttle position switch signal circuit is shorted to power
 
Closed throttle position switch or TP sensor is damaged/failed
 

Trouble Code: P0600

A/T Communication Line Circuit Malfunction:

Trouble Code Conditions: Engine started, system voltage over 10.0v, and the PCM detected an unexpected (continuous) voltage on the communication data circuit between the TCM and the PCM during the CCM test.

Possible Causes:



TCM communication line circuit is open or shorted to ground
 
TCM communication line circuit shorted to VREF or power (B+)
 
Clear the codes and retest for DTC P0600. If the same code resets, substitute a known good TCM or PCM and retest. If the code does not reset, the original TCM PCM has failed
 

Trouble Code: P0605

PCM Internal Fault Detected:

Trouble Code Conditions: Engine runtime over 30 seconds, and the PCM detected an internal calculation function problem or a problem in the self-shutoff function.

Possible Causes:



Clear the codes and retest for DTC P0605. If the same code resets, substitute a known good PCM and retest. If the code does not reset, the original PCM has failed.
 

Trouble Code: P0705

Park Neutral Position Switch Circuit Malfunction:

Trouble Code Conditions: Engine started, and the PCM detected multiple P/N switch inputs, or it did not a change in the P/N switch inputs with the vehicle moving.

Possible Causes:



P/N switch connector is damaged or loose
 
P/N switch signal circuit is open or shorted to ground
 
P/N switch signal circuit is shorted to VREF or system power
 
P/N switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0710

Transmission Fluid Temperature Sensor Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a speed over 6 mph in Drive with the TP signal over 1.20v, and the PCM detected the TFT sensor signal from the TCM was either too high or low during the CCM test.

Possible Causes:



TFT sensor signal circuit is open or shorted to ground
 
TFT sensor signal circuit is shorted to VREF or system power
 
TFT sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0720

TCM Revolution Sensor Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a speed of 19-35 mph in Drive with the TP signal over 1.20v for 30 seconds, and the TCM did not detect any signals from the Revolution sensor during the CCM test.

Possible Causes:



Revolution sensor connector is damage, open or shorted
 
Revolution sensor signal circuit is open or shorted to ground
 
Revolution sensor signal circuit shorted to VREF or power (B+)
 
Revolution sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0725

TCM Engine Speed Signal Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at 19-35 mph in Drive with the TP signal over 1.20v for 30 seconds, and the TCM did not detect any Engine Speed signals during the CCM continuous test.

Possible Causes:



Engine speed signal is open or shorted to ground
 
Engine speed sensor signal shorted to VREF or power (B+)
 
Engine speed sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0731

A/T First Gear Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an incorrect voltage condition on the 1st Gear circuit. Note: During this test, the CCM monitors the Actual gear position by checking the torque converter slip ratio. The slip ratio is calculated as this equation: A X C/B (where 'A' is the output shaft revolution signal, 'B' is the engine speed signal from the PCM, and 'C' is the gear ratio inferred TCM from other inputs. If the Actual gear ratio is higher than the gear position (1st2nd) inferred by the TCM, the slip ratio will be too high. If the slip ratio exceeds a certain value, the TCM determines that a fault exists and signals the PCM.

Possible Causes:



Shift Solenoid 'A' is stuck in open position
 
Shift Solenoid 'B' is stuck in open position
 

Trouble Code: P0732

A/T Second Gear Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an incorrect voltage condition on the 2nd Gear circuit. Note: During this test, the CCM monitors the Actual gear position by checking the torque converter slip ratio. The slip ratio is calculated as this equation: A X C/B (where 'A' is the output shaft revolution signal, 'B' is the engine speed signal from the PCM, and 'C' is the gear ratio inferred TCM from other inputs. If the Actual gear ratio is higher than the gear position (2nd) inferred by the TCM, the slip ratio will be too high. If the slip ratio exceeds a certain value, the TCM determines that a fault exists and signals the PCM to set this code.

Possible Causes:



Control valve sticking or binding
 
Solenoid valve is damaged or not operating
 

Trouble Code: P0733

A/T Third Gear Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an incorrect voltage condition on the 3rd Gear circuit. Note: During this test, the CCM monitors the Actual gear position by checking the torque converter slip ratio. The slip ratio is calculated as this equation: A X C/B (where 'A' is the output shaft revolution signal, 'B' is the engine speed signal from the PCM, and 'C' is the gear ratio inferred TCM from other inputs. If the Actual gear ratio is higher than the gear position (3rd) inferred by the TCM, the slip ratio will be too high. If the slip ratio exceeds a certain value, the TCM determines that a fault exists and signals the PCM.

Possible Causes:



Control valve sticking, solenoid valve damaged or not operating
 
Servo piston or brake band is damaged or is not operating
 

Trouble Code: P0734

A/T Fourth Gear Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an incorrect voltage condition on the 4th Gear circuit. Note: During this test, the CCM monitors the Actual gear position by checking the torque converter slip ratio. The slip ratio is calculated as this equation: A X C/B (where 'A' is the output shaft revolution signal, 'B' is the engine speed signal from the PCM, and 'C' is the gear ratio inferred TCM from other inputs. If the Actual gear ratio is higher than the gear position (4th) inferred by the TCM, the slip ratio will be too high. If the slip ratio exceeds a certain value, the TCM determines that a fault exists and signals the PCM.

Possible Causes:



Oil pump is damaged, or the TCC is not operating
 
Shift Solenoid 'B' may be stuck closed
 

Trouble Code: P0740

A/T TCC Solenoid Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an unexpected voltage condition on the TCC solenoid control circuit during the CCM continuous test.

Possible Causes:



TCC solenoid connector is damaged, open or shorted
 
TCC solenoid control circuit open or shorted to ground
 
TCC solenoid control circuit shorted to system power (B+)
 
TCC solenoid is damaged or has failed
 

Trouble Code: P0744

A/T Servo Valve Solenoid Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an unexpected voltage condition on the Servo Valve solenoid control circuit during the CCM continuous test.

Possible Causes:



Servo valve solenoid connector is damaged, open or shorted
 
Servo valve solenoid control circuit open or shorted to ground
 
Servo valve solenoid control circuit shorted to system power
 
Servo valve solenoid is damaged or has failed
 
TSB 03-034 (5/03) contains information related to this code
 

Trouble Code: P0745

A/T Low Pressure Solenoid Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an unexpected voltage condition on the Low Pressure solenoid control circuit during the CCM test.

Possible Causes:



Low pressure solenoid connector is damaged, open or shorted
 
Low pressure solenoid control circuit open or shorted to ground
 
Low pressure solenoid control circuit shorted to system power
 
Low pressure solenoid is damaged or has failed
 
TSB 03-034 (5/03) contains information related to this code
 

Trouble Code: P0750

A/T Shift Solenoid 'A' Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an unexpected voltage condition on the Shift Solenoid 'A' control circuit during the CCM test.

Possible Causes:



Shift Solenoid -A- connector is damaged, open or shorted
 
Shift Solenoid 'A' control circuit open or shorted to ground
 
Shift Solenoid 'A' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'A' is damaged or has failed
 
PCM or TCM has failed
 

Trouble Code: P0755

A/T Shift Solenoid 'B' Circuit Malfunction:

Trouble Code Conditions: Engine started, vehicle driven at a steady cruise speed, and the TCM detected an unexpected voltage condition on the Shift Solenoid 'B' control circuit during the CCM test.

Possible Causes:



Shift Solenoid -B- connector is damaged, open or shorted
 
Shift Solenoid 'B' control circuit open or shorted to ground
 
Shift Solenoid 'B' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'B' is damaged or has failed
 
PCM or TCM has failed
 

Trouble Code: P1102

Mass Airflow Sensor Range/Performance:

Trouble Code Conditions: Engine started, engine running at idle and cruise, and the PCM detected the MAF sensor signal remained near 1.0v at all times.

Possible Causes:



MAF sensor connector is damaged (it may be shorted)
 
MAF sensor signal circuit is shorted
 
MAF sensor is damaged or has failed
 
PCM is damaged or has failed
 

Trouble Code: P1110

Intake Valve Timing Control System Performance:

Trouble Code Conditions: Engine started, ECT sensor input at 59-230ºF, vehicle driven to over 4 mph at an engine speed of 1100-4600 rpm at high load conditions, the PCM detected the difference between the Intake Valve Timing solenoid "on" position did not correlate to the position wit it "off".

Possible Causes:



Intake valve timing position control sensor circuit is open
 
Intake valve timing position control solenoid damaged or failed
 
Signal pickup portion of camshaft is contaminated with debris
 

Trouble Code: P1111

Intake Valve Timing Control Circuit Malfunction (Bank 1):

Trouble Code Conditions: Engine started, and the PCM detected an unexpected voltage condition in the Intake Valve Timing Control solenoid circuit for Cylinder Bank 1 during the CCM test.

Possible Causes:



Intake valve timing control solenoid circuit is open
 
Intake valve timing position control solenoid damaged or failed
 
PCM has failed
 

Trouble Code: P1130

Swirl Control Solenoid Valve Performance:

Trouble Code Conditions: DTC P1165 not set, engine started, ECT sensor input at 50-131ºF, and the PCM detected an unexpected voltage on the Swirl Control valve circuit, or the vacuum signal was not sent to the Swirl Control valve with the valve commanded "on", or that the vacuum signal was not sent to the Swirl Control valve with the valve commanded "off". Note: If DTC P1165 is also set, repair that trouble code first.

Possible Causes:



Swirl Control valve control circuit is open or shorted to ground
 
Swirl Control valve is damaged or has failed
 
Swirl Control valve vacuum hoses are loose, restricted or dirty
 

Trouble Code: P1135

Intake Valve Timing Control Circuit Malfunction (Bank 2):

Trouble Code Conditions: Engine started, and the PCM detected an unexpected voltage condition in the Intake Valve Timing Control solenoid circuit for Cylinder Bank 2 during the CCM test.

Possible Causes:



Intake valve timing control solenoid circuit is open
 
Intake valve timing position control solenoid is damaged/failed
 
PCM has failed
 

Trouble Code: P1136

Intake Valve Timing Control Circuit Malfunction (Bank 2):

Trouble Code Conditions: Engine started, and the PCM detected an unexpected voltage condition in the Intake Valve Timing Control solenoid circuit for Cylinder Bank 2 during the CCM test. The Intake Valve Timing Control Solenoid Valve is controlled by a duty cycle signal from the PCM. This valve changes the amount of oil (and direction of the oil flow) through the Intake Valve Timing Control unit, or stops the flow.

Possible Causes:



Intake valve timing control solenoid circuit is open or shorted
 
Intake valve timing position control solenoid is damaged/failed
 
PCM has failed
 

Trouble Code: P1140

Intake Valve Timing Control Position Sensor Circuit Malfunction (Bank 1):

Trouble Code Conditions: Engine started, and the PCM detected an unexpected voltage on the Bank 1 Intake Valve Timing Control Position sensor circuit.

Possible Causes:



Intake valve timing control position sensor open or shorted
 
Intake valve timing control position sensor is damaged
 
Intake valve timing control position sensor has failed
 
PCM has failed
 

Trouble Code: P1143

HO2S-11 (Bank 1 Sensor 1) Lean Shift Monitoring (Bank 1):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S signal circuit were not reached during the CCM test period.

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1144

HO2S-11 (Bank 1 Sensor 1) Rich Shift Monitoring (Bank 1):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S signal circuit were not reached during the CCM test period.

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1145

Intake Valve Timing Control Position Sensor Circuit Malfunction (Bank 2):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected an unexpected voltage on the Bank 2 Intake Valve Timing Control Position sensor circuit during the CCM test.

Possible Causes:



Intake valve timing control position sensor open or shorted
 
Intake valve timing control position sensor is damaged
 
Intake valve timing control position sensor has failed
 
PCM has failed
 

Trouble Code: P1146

HO2S-12 (Bank 1 Sensor 2) Lean Shift Monitoring (Bank 1):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S-12 signal circuit were not reached during the CCM test period.

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1147

HO2S-12 (Bank 1 Sensor 2) Rich Shift Monitoring (Bank 1):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S-12 signal circuit were not reached during the CCM test period.

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1148

Closed Loop Malfunction Detected (Bank 1):

Trouble Code Conditions: Engine started, engine running in closed loop for over 2 minutes, and the PCM determined the engine was not operating in closed loop mode after the additional driving period had elapsed.

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S is damaged, contaminated or has failed
 
HO2S heater is damaged or has failed
 

Trouble Code: P1163

HO2S-12 (Bank 1 Sensor 2) Lean Shift Monitoring (Bank 2):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S-12 signal circuit were not reached during the CCM test period.

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1164

HO2S-12 (Bank 1 Sensor 2) Rich Shift Monitoring (Bank 2):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S-12 signal circuit were not reached during the CCM test period.

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more mechanical faults)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1165

Swirl Control Valve Control Vacuum Check Switch:

Trouble Code Conditions: Engine started, ECT sensor from 59-122ºF, and the PCM detected an unexpected voltage condition on the Swirl Control circuit during the CCM test.

Possible Causes:



SCV vacuum hoses are switched or disconnected
 
SCV control vacuum switch circuit is opened or shorted
 
SCV control vacuum switch is damaged or has failed
 
SCV solenoid is damaged or has failed
 

Trouble Code: P1166

HO2S-22 (Bank 2 Sensor 2) Lean Shift Monitoring (Bank 2):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S-22 signal circuit were not reached during the CCM test period.

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1167

HO2S-22 (Bank 2 Sensor 2) Rich Shift Monitoring (Bank 2):

Trouble Code Conditions: Engine started, vehicle driven at over 48 mph for 2 minutes, and the PCM detected the minimum and maximum voltages of the HO2S-22 signal circuit were not reached during the CCM test period.

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more with mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1168

Closed Loop Malfunction Detected (Bank 2):

Trouble Code Conditions: Engine started, engine running in closed loop for over 2 minutes, and the PCM determined the engine was not operating in closed loop mode after the additional driving period had elapsed.

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S is damaged, contaminated or has failed
 
HO2S heater is damaged or has failed
 

Trouble Code: P1217

Engine Over-Temperature Condition:

Trouble Code Conditions: Engine running in closed loop, and the PCM detected an engine overheated (engine over temperature) condition for too long a time.

Possible Causes:



Check cooling system components (i.e., hoses, cap, coolant)
 
Check the thermostat operation (it may be stuck partly closed)
 
Engine cooling fan circuit(s) open or shorted to ground
 
Engine cooling fan is damaged or has failed
 

Trouble Code: P1320

Ignition Control Signal Circuit Malfunction:

Trouble Code Conditions: Engine started, engine runtime over 20 seconds, and the PCM did not detect any IC signals from the power transistor during the test.

Possible Causes:



Ignition coil primary circuit is open or shorted
 
Ignition coil condenser is shorted
 
CKP sensor signal is erratic, missing or the sensor has failed
 
CMP sensor signal is erratic, missing or the sensor has failed
 
TSB 01-052 (9/01) contains information related to this code
 

Trouble Code: P1335

Crankshaft Position Reference Sensor Circuit Malfunction:

Trouble Code Conditions: Engine cranking; and the PCM did not receive the CKP sensor 120º reference signals, or with the engine running, it did not detect any 120º reference signals, or it detected the signals changed too much.

Possible Causes:



CKP sensor connector is damaged, loose or shorted
 
CKP reference signal circuit is open or shorted to ground
 
CKP reference sensor is damaged or has failed
 
Starter motor or starter motor circuit is damaged (not working)
 

Trouble Code: P1336

Crankshaft Position Sensor Circuit Malfunction:

Trouble Code Conditions: Engine started, engine runtime more than 5 seconds, and the PCM detected that the crankshaft position (CKP POS) signals were erratic or missing during the CCM continuous test.

Possible Causes:



CKP sensor connector is damaged, loose or shorted
 
CKP POS signal circuit is open or shorted to ground
 
Crankshaft position (POS) sensor is damaged or has failed
 
Engine flywheel or drive plate gear tooth may be chipped or damaged (causing erratic CKP signals - check with Lab Scope)
 

 
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