Honda Prelude Accord Civic S2000 2001-2006

TroubleCodes (6 of 29)

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1.7L L4 - Auto



1.7L L4 - Auto

Trouble Code: P0131

HO2S-11 (Bank 1 Sensor 1) Circuit Low Input

Trouble Code Conditions: Engine running in closed loop in D4 position at cruise speed, and the PCM detected the HO2S signal was fixed at less than 0.50v. Note: The actual value to set the code is stored in the PCM memory.

Possible Causes:



HO2S signal circuit is open or it is shorted to ground
 
HO2S may be contaminated or may have failed
 
Fuel supply system is too lean (fuel filter is clogged or dirty)
 
PCM has failed
 

Trouble Code: P0132

HO2S-11 (Bank 1 Sensor 1) Circuit High Input

Trouble Code Conditions: Engine running in closed loop in D4 position at cruise speed, and the PCM detected the HO2S signal was fixed at more than 0.90v Note: The actual value to set the code is stored in the PCM memory.

Possible Causes:



HO2S signal tracking (wet/oily) in connector causing a short between the signal circuit and heater power circuit
 
HO2S signal circuit is open, or the ground circuit is open
 
HO2S heater supply circuit is open
 
PCM has failed
 

Trouble Code: P0133

HO2S-11 (Bank 1 Sensor 1) Circuit Slow Response

Trouble Code Conditions: Engine running in closed loop in D4 position at over 55 mph at steady speed, and the PCM detected the HO2S response time to switch between 300-600 mv was too slow, or that the rich to lean or lean to rich switch time was too slow.

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
O2S element fuel contamination
 
O2S element has deteriorated
 
PCM has failed
 

Trouble Code: P0137

HO2S-12 (Bank 1 Sensor 2) Circuit Low Input

Trouble Code Conditions: Engine running in closed loop in D4 position at cruise speed, and the PCM detected the HO2S signal was fixed at less than 0.30v. Note: The actual value where the code sets is in the PCM memory.

Possible Causes:



HO2S signal circuit is open
 
HO2S signal circuit is shorted to ground
 
HO2S ground circuit is open
 
HO2S may be contaminated or may have failed
 
PCM has failed
 

Trouble Code: P0138

HO2S-12 (Bank 1 Sensor 2) Circuit High Input

Trouble Code Conditions: Engine running in closed loop in D4 position at cruise speed, and the PCM detected the HO2S signal was fixed at more than 0.60v Note: The actual value where the code sets is in the PCM memory.

Possible Causes:



HO2S signal tracking (wet/oily) in connector causing a short between the signal circuit and heater power circuit
 
HO2S signal circuit is open, or the ground circuit is open
 
HO2S heater supply circuit is open
 
PCM has failed
 

Trouble Code: P0139

HO2S-12 (Bank 1 Sensor 2) Circuit Slow Response

Trouble Code Conditions: Engine running in closed loop in D4 position at over 55 mph at steady speed, and the PCM detected the HO2S response time to switch between 300-600 mv was too slow, or that the rich to lean or lean to rich switch time was too slow.

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
HO2S element fuel contamination
 
HO2S element has deteriorated
 
PCM has failed
 

Trouble Code: P0191

CNG Fuel Pressure Sensor Range/Performance

Trouble Code Conditions: Engine running at hot idle speed, and the PCM detected the Fuel Pressure sensor signal indicated a fuel pressure out of specification. Note: The fuel pressure sensor PID reading a hot idle is 2.33-2.93v.

Possible Causes:



Fuel leaks somewhere in the system
 
Fuel pressure regulator is damaged or has failed
 
Fuel pressure sensor is out of calibration or has failed
 
PCM has failed
 

Trouble Code: P0192

CNG Fuel Pressure Sensor Circuit Low Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected low voltage condition on the Fuel Pressure sensor signal circuit. Note: The fuel pressure sensor PID reading a hot idle is 2.33-2.93v.

Possible Causes:



Fuel pressure sensor signal circuit is shorted to ground
 
Fuel pressure sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0193

CNG Fuel Pressure Sensor Circuit High Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected high voltage condition on the Fuel Pressure sensor signal circuit. Note: The fuel pressure sensor PID reading a hot idle is 2.33-2.93v.

Possible Causes:



Fuel pressure sensor signal circuit is open
 
Fuel pressure sensor signal circuit is shorted to VREF
 
Fuel pressure sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0700

Automatic Transaxle

Trouble Code Conditions: Engine running and the PCM detected an Automatic Transaxle fault. Note: DTC P0700 sets along with several other TCM trouble codes.

Possible Causes:



Check for other A/T related trouble codes, and then refer to the Possible Causes for these trouble codes for more information.
 

Trouble Code: P0715

TCM A/T Mainshaft Speed Sensor Circuit Malfunction

Trouble Code Conditions: Engine running with VSS inputs received, and the PCM detected an unexpected voltage condition on the Mainshaft speed sensor circuit.

Possible Causes:



Mainshaft speed sensor circuit is open or shorted to ground
 
Mainshaft speed sensor circuit is shorted to VREF or power
 
Mainshaft speed sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0720

TCM A/T Countershaft Speed Sensor Circuit Malfunction

Trouble Code Conditions: Engine running with VSS inputs received, and the PCM detected an unexpected voltage on the Countershaft Speed Sensor circuit.

Possible Causes:



Countershaft speed sensor circuit is open or shorted to ground
 
Countershaft speed sensor circuit is shorted to VREF or power
 
Countershaft speed sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0725

Automatic Transaxle

Trouble Code Conditions: Engine running and the PCM detected an Automatic Transaxle fault. Note: This trouble code sets along with several other Automatic Transaxle related trouble codes.

Possible Causes:



Check for other A/T related trouble codes, and then refer to the Possible Causes for these trouble codes for more information.
 

Trouble Code: P0730

TCM A/T Shift Control System

Trouble Code Conditions: No other A/T trouble codes set, engine running at cruise speed with VSS inputs received, and the PCM detected the lockup clutch did not lock or unlock correctly.

Possible Causes:



Refer to the repair instructions in a transmission repair manual or the information in other electronic media to repair this code.
 

Trouble Code: P0740

TCM A/T Lockup Clutch System

Trouble Code Conditions: No other A/T trouble codes set, engine running at cruise speed with VSS inputs received, and the PCM detected the lockup clutch did not engage or disengage correctly.

Possible Causes:



Refer to the repair instructions in a transmission repair manual or the information in other electronic media to repair this code.
 

Trouble Code: P0753

TCM A/T Lockup Solenoid 'A' Circuit Malfunction

Trouble Code Conditions: Engine running with VSS inputs, and the PCM detected an unexpected voltage condition on the Solenoid Valve 'A' circuit.

Possible Causes:



TCM Solenoid 'A' control circuit is open or shorted to ground
 
TCM Solenoid 'A' control circuit is shorted to system power
 
TCM Solenoid 'A' is damaged or has failed
 
TCM or PCM has failed
 

Trouble Code: P0758

TCM A/T Lockup Solenoid 'B' Circuit Malfunction

Trouble Code Conditions: Engine running with VSS inputs, and the PCM detected an unexpected voltage condition on the Solenoid Valve 'B' circuit.

Possible Causes:



TCM Solenoid 'B' control circuit is open or shorted to ground
 
TCM Solenoid 'B' control circuit is shorted to system power
 
TCM Solenoid 'B' is damaged or has failed
 
TCM or PCM has failed
 

Trouble Code: P0763

TCM A/T Control Unit or Related Circuit Malfunction

Trouble Code Conditions: Engine running with VSS inputs received, and the PCM detected a fault in the TCM A/T Control Unit or one of its related circuits.

Possible Causes:



Refer to the repair instructions in a transmission repair manual or the information in other electronic media to repair this code.
 

Trouble Code: P0780

Automatic Transaxle Malfunction

Trouble Code Conditions: Engine running and the PCM detected an Automatic Transaxle fault. Note: This trouble code (P0780) sets with along with several TCM related trouble codes.

Possible Causes:



Refer to the repair instructions in a transmission repair manual or the information in other electronic media to repair this code.
 

Trouble Code: P1149

HO2S-11 (Bank 1 Sensor 1) Performance

Trouble Code Conditions: Vehicle driven at 55 mph in closed loop at a steady throttle, then back to idle speed, and the PCM detected the front HO2S response time was too slow between 300-600 mv, or it detected the rich to lean or lean to rich switch rate was too slow.

Possible Causes:



Exhaust leak present in the exhaust manifold or exhaust pipes
 
O2S element fuel contamination
 
O2S element has deteriorated
 
PCM has failed
 

Trouble Code: P1163

Lean A/F Sensor (Bank 1 Sensor 1) Slow Response

Trouble Code Conditions: Engine at idle speed, then accelerated to 55 mph for 5 seconds, then back to idle speed for 5 seconds, and the PCM detected the LAF sensor response time was too slow, or that the R-L or L-R switch rate was too slow during the HO2S Monitor test period.

Possible Causes:



LAF sensor may be contaminated or may have failed
 
Fuel supply system is too lean (exhaust leaks in front of LAF)
 
Fuel supply system is too rich (fuel filter is clogged or dirty)
 
PCM has failed
 

Trouble Code: P1164

Lean A/F Sensor (Bank 1 Sensor 1) Range/Performance

Trouble Code Conditions: Engine speed over 1500 rpm in 4th gear in closed loop, then a quick acceleration to WOT, followed by a 5 second deceleration period with the throttle closed, and the PCM detected a problem in the LAF sensor response time, or that the rich-to lean or lean-to rich switch rate was too slow during the test.

Possible Causes:



LAF sensor may be contaminated or may have failed
 
Fuel supply system is too lean (exhaust leaks in front of LAF)
 
Fuel supply system is too rich (fuel filter is clogged or dirty)
 
PCM has failed
 

Trouble Code: P1165

Lean A/F-11 (Bank 1 Sensor 1) Range/Performance

Trouble Code Conditions: Vehicle driven at an engine speed of 1500-2500 rpm at 45-60 mph for 2-3 minutes, followed by a deceleration period of 3 seconds back to idle speed with the throttle closed, and the PCM detected the LAF sensor signal was too high or too low during the HO2S Monitor test.

Possible Causes:



LAF signal circuit is open or grounded (intermittent fault)
 
LAF signal circuit is shorted to heater power (intermittent)
 
LAF may be contaminated or may have failed
 
PCM has failed
 

Trouble Code: P1182

CNG Fuel Temperature Sensor Circuit Low Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected low voltage condition on the Fuel Temperature sensor signal circuit.

Possible Causes:



Fuel temperature sensor signal circuit is shorted to ground
 
Fuel temperature sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1183

CNG Fuel Temperature Sensor Circuit High Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected high voltage condition on the Fuel Temperature sensor signal circuit.

Possible Causes:



Fuel temperature sensor signal circuit is open
 
Fuel temperature sensor signal is shorted to VREF
 
Fuel temperature sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1187

CNG Fuel Tank Temperature Sensor Circuit Low Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected low voltage condition on the Fuel Tank Temperature sensor signal circuit.

Possible Causes:



Fuel tank temperature sensor signal circuit is shorted to ground
 
Fuel tank temperature sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1188

CNG Fuel Tank Temperature Sensor Circuit High Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected high voltage condition on the Fuel Tank Temperature sensor signal circuit.

Possible Causes:



Fuel tank temperature sensor signal circuit is open
 
Fuel tank temperature sensor signal circuit is shorted to ground
 
Fuel tank temperature sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1192

CNG Fuel Tank Pressure Sensor Circuit Low Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected low voltage condition on the Fuel Tank Pressure sensor signal circuit.

Possible Causes:



Fuel tank pressure sensor signal circuit is shorted to ground
 
Fuel tank pressure sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1193

CNG Fuel Tank Pressure Sensor Circuit High Input

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected high voltage condition on the Fuel Tank Pressure sensor signal circuit.

Possible Causes:



Fuel tank pressure sensor signal circuit is open
 
Fuel tank pressure sensor signal circuit is shorted to VREF
 
Fuel tank pressure sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1508

Idle Air Control System Low RPM

Trouble Code Conditions: Engine running at idle speed while in closed loop, and the PCM detected the Actual idle speed was more than 100 rpm below the Target idle speed during the CCM test.

Possible Causes:



Air inlet dirty, restricted or the IAC valve is stuck partially closed
 
IAC valve is damaged or has failed
 
The throttle plate is carbon fouled (it may need to be cleaned)
 
PCM has failed
 

Trouble Code: P1509

Idle Air Control System High RPM

Trouble Code Conditions: Engine running at idle speed while in closed loop, and the PCM detected the Actual idle speed was more than 100 rpm above the Target idle speed during the CCM test.

Possible Causes:



Air inlet dirty, restricted or the IAC valve is stuck partially closed
 
IAC valve is damaged or has failed
 
The throttle plate is carbon fouled (it may need to be cleaned)
 
PCM has failed
 

Trouble Code: P1671

TCM A/T FI Data Line No Signal

Trouble Code Conditions: Key on or engine running, and the PCM detected a fault in the TCM FI Data Line circuit during the CCM test.

Possible Causes:



A/T FI data line is open or shorted to ground
 
A/T FI data line is shorted to VREF or system power
 
TCM or PCM has failed
 

Trouble Code: P1672

TCM A/T FI Data Line Circuit Malfunction

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected voltage condition on the TCM FI Data Line circuit during the test.

Possible Causes:



A/T FI data line is open or shorted to ground
 
A/T FI data line is shorted to VREF or system power
 
TCM or PCM has failed
 

Trouble Code: P1676

TCM A/T FI Data Line Circuit Malfunction

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected voltage condition on the TCM FI Data Line circuit during the test.

Possible Causes:



A/T FI data line is open or shorted to ground
 
A/T FI data line is shorted to VREF or system power
 
TCM or PCM has failed
 

Trouble Code: P1677

TCM A/T FI Data Line Circuit Malfunction

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected voltage condition on the TCM FI Data Line circuit during the test.

Possible Causes:



A/T FI data line is open or shorted to ground
 
A/T FI data line is shorted to VREF or system power
 
TCM or PCM has failed
 

Trouble Code: P1678

TCM A/T FPTDR Signal Line Circuit Malfunction

Trouble Code Conditions: Key on or engine running, and the PCM detected an unexpected voltage condition on the TCM FPTDR Line circuit during the test.

Possible Causes:



A/T FTPDR data line is open or shorted to ground
 
A/T FTPDR data line is shorted to VREF or system power
 
TCM or PCM has failed
 

Trouble Code: P1705

TCM A/T Gear Position Switch Low Input

Trouble Code Conditions: Engine running, and the PCM detected a "low input" condition in the Gear Position Switch. Note: The transaxle has no lockup function when this code is set.

Possible Causes:



A/T gear position switch signal circuit is shorted to ground
 
A/T gear position switch signal circuit is shorted to another wire
 
A/T gear position switch is damaged or has failed
 

Trouble Code: P1706

TCM A/T Gear Position Switch High Input

Trouble Code Conditions: Key on or engine running, and the PCM detected a "high input" condition in the Gear Position Switch. Note: The transaxle has no lockup function when this code is set.

Possible Causes:



A/T gear position switch signal circuit is open
 
A/T gear position switch is damaged or has failed
 

Trouble Code: P1753

TCM A/T Lockup Solenoid Valve 'A' Circuit Malfunction

Trouble Code Conditions: Vehicle driven in 1st, 2nd, 3rd and 4th gears, and the PCM detected an unexpected voltage condition on the Solenoid 'A' circuit during the CCM test. Note: The D4 lamp on the dash will blink when this code is set.

Possible Causes:



Lockup solenoid 'A' control circuit is open or shorted to ground
 
Lockup solenoid 'A' circuit is shorted to system power
 
Lockup solenoid 'A' is damaged or has failed
 
TCM or PCM has failed
 

 
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