Forenza 2007

2.0L L4 VIN - Auto 6

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Trouble Code: P0650



Malfunction Indicator Lamp (MIL) Control Circuit

Possible Causes:



MIL bulb and/or circuit
 
ECM
 

Trouble Code: P0651



Sensor Reference Voltage -B- Circuit/Open

Possible Causes:



CMP sensor and/or its circuit
 
ECM
 

Trouble Code: P0685



Engine Controls Ignition Relay Control Circuit

Possible Causes:



Fuse
 
Powertrain relay and/or circuit
 
ECM
 

Trouble Code: P0703



Brake Switch -B- Circuit

Possible Causes:



Brake light switch and/or circuit
 
ECM
 

Trouble Code: P0705



Transmission Range Sensor Circuit Malfunction

Possible Causes:



TR range switch signal is open
 
TR range switch signal shorted to another switch position signal
 
TR range switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0710



Transmission Fluid Temperature Sensor

Possible Causes:



Harness or connectors
 
(The sensor circuit is open or shorted.)
 
A/T fluid temperature sensor 1
 

Trouble Code: P0711



Transmission Fluid Temperature Sensor -A- Circuit Range / Performance

Possible Causes:



Transmission fluid temperature sensor or its circuit.
 
TCM
 

Trouble Code: P0712



Transmission Fluid Temperature Sensor -A- Circuit Low

Possible Causes:



Transmission fluid temperature sensor or its circuit.
 
TCM
 

Trouble Code: P0713



Transmission Fluid Temperature Sensor -A- Circuit High

Possible Causes:



Transmission fluid temperature sensor or its circuit.
 
TCM
 

Trouble Code: P0715



TCM Input Speed Sensor Circuit Malfunction

Possible Causes:



ISS signal (+) circuit is open or shorted to ground
 
ISS signal (-) circuit is open or shorted to ground
 
ISS is damaged or has failed
 
TCM has failed
 

Trouble Code: P0716



Input / Turbine Speed Sensor -A- Circuit Range / Performance

Possible Causes:



Sensor and/or circuit
 
ECM
 

Trouble Code: P0717



Input / Turbine Speed Sensor -A- Circuit No Signal

Possible Causes:



Input shaft speed sensor or its circuit malfunction.
 
Improper input shaft speed sensor installation.
 
Damaged clutch drum.
 
Foreign material attachment to sensor or drum.
 
TCM
 

Trouble Code: P0720



Output Speed Sensor (VSS) Circuit Malfunction

Possible Causes:



VSS circuit open or short
 
Vehicle speed sensor malfunction
 
Foreign material being attached or sensor installed improperly
 
Gear damaged
 

Trouble Code: P0721



Output Speed Sensor Circuit Range / Performance

Possible Causes:



Sensor and/or circuit
 
ECM
 

Trouble Code: P0722



Output Speed Sensor Circuit No Signal

Possible Causes:



Output shaft speed sensor or its circuit malfunction.
 
Improper output shaft speed sensor installation.
 
Damaged sensor rotor.
 
Foreign material attachment to sensor or rotor.
 
TCM
 

Trouble Code: P0725



TCM Engine Speed Input Circuit Malfunction

Possible Causes:



Engine speed signal to the TCM is open
 
Engine speed signal to the TCM is shorted to ground
 
Engine speed signal to the TCM is shorted to power
 
TCM has failed
 

Trouble Code: P0726



Engine Speed Input Circuit Range / Performance

Possible Causes:



Circuit
 
ECM
 
TCM
 

Trouble Code: P0727



Engine Speed Input Circuit Malfunction

Possible Causes:



-Br- circuit open or short
 
TCM malfunction
 
ECM malfunction
 

Trouble Code: P0731



1Gr Incorrect Ratio

Possible Causes:



Input clutch solenoid valve
 
Front brake solenoid valve
 
Direct clutch solenoid valve
 
High and low reverse clutch solenoid valve
 
Each clutch
 
Hydraulic control circuit
 

Trouble Code: P0732



2Gr Incorrect Ratio

Possible Causes:



Input clutch solenoid valve
 
Front brake solenoid valve
 
Direct clutch solenoid valve
 
High and low reverse clutch solenoid valve
 
Each clutch
 
Hydraulic control circuit
 

Trouble Code: P0733



3Gr Incorrect Ratio

Possible Causes:



Input clutch solenoid valve
 
Front brake solenoid valve
 
Direct clutch solenoid valve
 
High and low reverse clutch solenoid valve
 
Each clutch
 
Hydraulic control circuit
 

Trouble Code: P0734



4Gr Incorrect Ratio

Possible Causes:



Input clutch solenoid valve
 
Front brake solenoid valve
 
Direct clutch solenoid valve
 
High and low reverse clutch solenoid valve
 
Each clutch
 
Hydraulic control circuit
 

Trouble Code: P0741



TCC Solenoid Performance (Stuck Off)

Possible Causes:



TCC solenoid has a mechanical failure
 
TCC solenoid has a hydraulic failure
 
PCM has failed
 

Trouble Code: P0742



Torque Converter Clutch Circuit Performance or Stuck ON

Possible Causes:



Mechanical malfunction of TCC pressure control solenoid valve.
 
Malfunction of valve body assembly.
 
Fluid passage clogged or leaking.
 
Torque converter clutch malfunction.
 

Trouble Code: P0781



1-2 Shift

Possible Causes:



Mechanical malfunction of 1-2 shift valve.
 
Malfunction of valve body assembly.
 
Mechanical malfunction of automatic transmission (clutch, brake or gear etc.).
 

Trouble Code: P0782



2 - 3 Shift Malfunction

Possible Causes:



Circuit
 
ECM
 
TCM
 

Trouble Code: P0783



3 - 4 Shift Malfunction

Possible Causes:



Circuit
 
ECM
 
TCM
 

Trouble Code: P1137



HO2S Circuit Low Voltage During Power Enrichment Sensor 2

Possible Causes:



Lean condition
 
Sensor
 
Circuit
 
ECM
 

Trouble Code: P1138



HO2S Circuit High Voltage During Decel Fuel Cut-Off (DFCO) Sensor 2

Possible Causes:



Rich condition
 
Sensor
 
Circuit
 
ECM
 

Trouble Code: P1166



HO2S Circuit Low Voltage During Power Enrichment Sensor 1

Possible Causes:



low fuel level
 
sensor
 

Trouble Code: P1391



Rough Road Sensor Performance

Possible Causes:



Sensor
 
Circuit
 
ECM
 

Trouble Code: P1392



Rough Road Sensor Circuit Low Voltage

Possible Causes:



Sensor
 
Circuit
 
ECM
 

Trouble Code: P1393



Rough Road Sensor Circuit High Voltage

Possible Causes:



Sensor
 
Circuit
 
ECM
 

Trouble Code: P1396



WSSD Rough Road System Fault

Possible Causes:



Circuit
 
ECM
 

Trouble Code: P1397



WSSD Rough Road - Serial Data Fault

Possible Causes:



Circuit
 
ECM
 

Trouble Code: P1516



Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

Possible Causes:



Throttle body
 
Circuit
 
TAC
 
ECM
 

Trouble Code: P1604



TCM Data Check of Internal & Extended RAM Failed

Possible Causes:



TCM
 

Trouble Code: P1606



TCM Failure of External Watchdog

Possible Causes:



Fuse
 
Circuit
 
TCM
 

Trouble Code: P161B



Control Module Torque Performance

Possible Causes:



Excessive airflow
 
ECM
 

Trouble Code: P1779



Engine Torque Input Signal Malfunction

Possible Causes:



Circuit
 
TCM
 
ECM
 

 
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