Mitsubishi Car 1999-05

1.5L L4 VIN A Auto

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1.5L L4 VIN A Auto

Trouble Code: P0500



Vehicle Speed Sensor Circuit Malfunction

Possible Causes:



VSS signal circuit is open or shorted to ground
 
VSS power circuit is open (check for power from MFI relay)
 
VSS ground circuit is open between sensor and chassis ground
 
VSS is damaged or has failed
 
PCM has failed (the PCM provides 5v on the VSS signal circuit)
 

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 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: P0725



Engine Speed Sensor Signal to TCM

Possible Causes:



CKP sensor signal circuit to TCM is open or shorted to ground
 
CKP sensor is damaged, erratic or has failed
 
TCM or the PCM (controller) 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: P0740



A/T Lockup Control Out-Of-Range Malfunction

Possible Causes:



Transmission fluid is contaminated, or the fluid level is too low
 
Worn pump bushing and/or the TCC is damaged or has failed
 
Valve body lockup accumulator diameter is out of specification
 

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: P0750



A/T LR Solenoid Circuit Malfunction

Possible Causes:



LR solenoid control circuit is open, shorted to ground or power
 
LR pressure switch is open, shorted to ground or it has failed
 
LR solenoid is damaged or has failed
 
TCM power ground circuit is open, or the TCM 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: P0755



A/T 2-3 Solenoid Circuit Malfunction

Possible Causes:



2-3 solenoid control circuit is open, shorted to ground or power
 
2-3 pressure switch is open, shorted to ground or it has failed
 
2-3 solenoid is damaged or has failed
 
TCM power ground circuit is open, or the TCM 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: P0760



A/T OD Solenoid Circuit Malfunction

Possible Causes:



OD solenoid control circuit is open, shorted to ground or power
 
OD pressure switch is open, shorted to ground or it has failed
 
OD solenoid is damaged or has failed
 
TCM power ground circuit is open, or the TCM 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: P0765



A/T UD Solenoid Circuit Malfunction

Possible Causes:



UD solenoid control circuit is open, shorted to ground or power
 
UD pressure switch is open, shorted to ground or it has failed
 
UD solenoid is damaged or has failed
 
TCM power ground circuit is open, or the TCM 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: P1600



PCM/TCM Serial Communication Link Malfunction

Possible Causes:



Serial communication link between the TCM, PCM and the DLC is open, shorted to ground or shorted to system power
 
TCM and/or PCM has failed
 

Trouble Code: P1795



TP Sensor Signal Circuit to TCM

Possible Causes:



TP sensor signal circuit to TCM is open or shorted to ground
 
TP sensor is damaged or it has failed
 
PCM has failed
 

 
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