Mitsubishi Car 1999-05

2.0L L4 - Auto 1

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2.0L L4 - Auto

Trouble Code: P0551



Power Steering Pressure Switch Circuit Malfunction

Possible Causes:



Power steering pressure switch signal circuit is open
 
Power steering pressure switch signal circuit shorted to ground
 
Power steering pressure switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0554



Power Steering Pressure Switch Circuit Intermittent

Possible Causes:



Power steering pressure switch circuit is shorted or open
 
Incorrect power steering fluid level or oil pump pressure
 
Power steering pressure switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0606



PCM Main Processor Malfunction

Possible Causes:



PCM has failed
 

Trouble Code: P0622



Generator FR Terminal Circuit Malfunction

Possible Causes:



Generator failed
 
Generator FR terminal circuit open or shorted
 
PCM has failed
 

Trouble Code: P0638



Throttle Actuator Control Motor Circuit Range/Performance Problem

Possible Causes:



Throttle valve return spring failed
 
Throttle valve operation failed
 
Throttle actuator control motor failed
 
Throttle actuator control motor circuit shorted or open
 
PCM has failed
 

Trouble Code: P0642



Throttle Position Sensor Power Supply

Possible Causes:



PCM has failed
 

Trouble Code: P0657



Throttle Actuator Control Motor Relay Circuit Malfunction

Possible Causes:



Throttle actuator control motor failed
 
Throttle actuator control motor circuit shorted or open
 
PCM has failed
 

Trouble Code: P705



Transmission Range Sensor Circuit Malfunction

Possible Causes:



P/N switch signal circuit is open or shorted to ground
 
P/N switch power circuit is open (check for power at MFI relay)
 
P/N switch is out-of-adjustment
 
P/N switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0712



Transmission Fluid Temperature Sensor Circuit Low Input

Possible Causes:



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

Trouble Code: P0713



Transmission Fluid Temperature Sensor Circuit High Input

Possible Causes:



TFT sensor signal circuit is open between the sensor and PCM
 
TFT sensor ground circuit is open between sensor and PCM
 
TFT sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0715



A/T Input/Turbine Speed Sensor Circuit Malfunction

Possible Causes:



Input speed sensor signal circuit is open or shorted to ground
 
Input speed sensor signal circuit is shorted to VREF or power
 
Input speed sensor is damaged or has failed
 
TCM has failed
 

Trouble Code: P0720



A/T Output Speed Sensor Circuit Malfunction

Possible Causes:



Output speed sensor signal circuit is open or shorted to ground
 
Output speed sensor signal circuit is shorted to VREF or power
 
Output speed sensor is damaged or has failed
 
TCM has failed
 

Trouble Code: P0731



A/T Incorrect First Gear Ratio

Possible Causes:



Solenoid or related pressure switch is damaged or has failed
 
Problems related to the Input Speed or Output Speed sensor
 
LR clutch is damaged, leaking or has failed
 
Problems related to the transmission valve body
 

Trouble Code: P0732



A/T Incorrect Second Gear Ratio

Possible Causes:



Solenoid or related pressure switch is damaged or has failed
 
Problems related to the Input Speed or Output Speed sensor
 
LR clutch is damaged, leaking or has failed
 
Problems related to the transmission valve body
 

Trouble Code: P0733



A/T Incorrect Third Gear Ratio

Possible Causes:



Solenoid or related pressure switch is damaged or has failed
 
Problems related to the Input Speed or Output Speed sensor
 
LR clutch is damaged, leaking or has failed
 
Problems related to the transmission valve body
 

Trouble Code: P0734



A/T Incorrect Fourth Gear Ratio

Possible Causes:



Solenoid or related pressure switch is damaged or has failed
 
LR clutch is damaged, leaking or has failed
 
Problems related to the Input Speed or Output Speed sensor
 
Problems related to the transmission valve body
 

Trouble Code: P0736



A/T Incorrect Reverse Gear Ratio

Possible Causes:



Reverse Gear is damaged or has failed
 
LR clutch is damaged, leaking or has failed
 
Problems related to the Input Speed or Output Speed sensor
 
Problems related to the transmission valve body
 

Trouble Code: P0741



A/T Torque Converter Clutch Performance (Stuck Off)

Possible Causes:



TCC solenoid has a mechanical failure (solenoid is stuck off)
 
TCC solenoid has a hydraulic failure
 
PCM has failed
 

Trouble Code: P0742



A/T Torque Converter Clutch Performance (Stuck On)

Possible Causes:



TCC solenoid has a mechanical failure (solenoid is stuck on)
 
TCC solenoid has a hydraulic failure
 
PCM has failed
 

Trouble Code: P0743



A/T Torque Converter Clutch Performance (Stuck On)

Possible Causes:



TCC solenoid control circuit open or shorted to ground
 
TCC solenoid wiring harness connector damaged
 
TCC solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0753



A/T Shift Solenoid 'A' Circuit Malfunction

Possible Causes:



SSA solenoid control circuit open or shorted to ground
 
SSA solenoid wiring harness connector damaged
 
SSA solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0758



A/T Shift Solenoid 'B' Circuit Malfunction

Possible Causes:



SSB solenoid control circuit open or shorted to ground
 
SSB solenoid wiring harness connector damaged
 
SSB solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0763



A/T Shift Solenoid 'C' Circuit Malfunction

Possible Causes:



SSC solenoid control circuit open or shorted to ground
 
SSC solenoid wiring harness connector damaged
 
SSC solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0768



A/T Shift Solenoid 'D' Circuit Malfunction

Possible Causes:



SSD solenoid control circuit open or shorted to ground
 
SSD solenoid wiring harness connector damaged
 
SSD solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P1602



Communication Malfunction (between PCM Main Processor and System LSI)

Possible Causes:



PCM has failed
 

Trouble Code: P1751



A/T Control Relay Circuit Malfunction

Possible Causes:



A/T Control Relay circuit is open or shorted to ground
 
A/T Control Relay circuit is shorted to system power (B+)
 
A/T Control Relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P2100



Throttle Actuator Control Motor Circuit Open

Possible Causes:



Throttle actuator control motor failed
 
Throttle actuator control motor circuit open
 
PCM has failed
 

Trouble Code: P2101



Throttle Actuator Control Motor Magneto Malfunction

Possible Causes:



Throttle actuator control motor failed
 
Throttle actuator control motor circuit shorted
 
PCM has failed
 

Trouble Code: P2102



Throttle Actuator Control Motor Circuit Shorted Low

Possible Causes:



Throttle actuator control motor failed
 
Throttle actuator control motor circuit shorted
 
PCM has failed
 

Trouble Code: P2103



Throttle Actuator Control Motor Circuit Shorted High

Possible Causes:



Throttle actuator control motor failed
 
Throttle actuator control motor circuit shorted
 
PCM has failed
 

Trouble Code: P2121



Accelerator Pedal Position Sensor (Main) Circuit Range/Performance Problem

Possible Causes:



Accelerator pedal position sensor misadjusted or failed
 
Accelerator pedal position sensor (main) open or shorted
 
Accelerator pedal position switch misadjusted or failed
 
Accelerator pedal position switch open or shorted
 
PCM has failed
 

Trouble Code: P2122



Accelerator Pedal Position Sensor (Main) Circuit Low Input

Possible Causes:



Accelerator pedal position sensor misadjusted or failed
 
Accelerator pedal position sensor (main) open or shorted
 
PCM has failed
 

Trouble Code: P2123



Accelerator Pedal Position Sensor (Main) Circuit High Input

Possible Causes:



Accelerator pedal position sensor misadjusted or failed
 
Accelerator pedal position sensor (main) open or shorted
 
PCM has failed
 

Trouble Code: P2126



Accelerator Pedal Position Sensor (Sub) Circuit Range/Performance Problem

Possible Causes:



Accelerator pedal position sensor misadjusted or failed
 
Accelerator pedal position sensor (sub) open or shorted
 
Accelerator pedal position switch misadjusted or failed
 
Accelerator pedal position switch open or shorted
 
PCM has failed
 

Trouble Code: P2127



Accelerator Pedal Position Sensor (Main) Circuit Low Input

Possible Causes:



Accelerator pedal position sensor misadjusted or failed
 
Accelerator pedal position sensor (sub) open or shorted
 
PCM has failed
 

Trouble Code: P2128



Accelerator Pedal Position Sensor (Main) Circuit High Input

Possible Causes:



Accelerator pedal position sensor misadjusted or failed
 
Accelerator pedal position sensor (main) open or shorted
 
PCM has failed
 

Trouble Code: P2135



Throttle Position Sensor (Main and Sub) Range/Performance Problem

Possible Causes:



TPS failed
 
TPS shorted
 
PCM has failed
 

Trouble Code: P2138



Accelerator Pedal Position Sensor (Main and Sub) Range/Performance Problem

Possible Causes:



Accelerator pedal position sensor misadjusted or failed
 
Accelerator pedal position sensor (main) open or shorted
 
PCM has failed
 

Trouble Code: P2173



Abnormal Intake Air Amount

Possible Causes:



MAF sensor failed
 
Throttle valve faulty operation
 
TPS failed
 
PCM has failed
 

Trouble Code: P2227



Barometric Pressure Circuit Range/Performance Problem

Possible Causes:



PCM has failed
 

 
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