Ram B1500, B2500, B3500, 1999-2003

5.9L L6 VIN 7 Auto 5

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Trouble Code: P0703



A/T Brake Switch Sense Circuit Malfunction

Possible Causes:



Brake switch signal circuit or the switch ground circuit is open
 
Brake switch is damaged, out of adjustment or has failed
 
PCM has failed
 

Trouble Code: P0705



A/T Check Shifter Signal Circuit Malfunction

Possible Causes:



TR1, T3, T41 or T42 sense circuit is open
 
TR1, T3, T41 or T42 sense circuit is shorted to ground
 
TR1, T3, T41 or T42 Sensor circuit is shorted to system power
 
Transmission Range Sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0711



A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup

Possible Causes:



TFT Sensor signal has an intermittent high resistance condition
 
TFT Sensor is damaged, skewed or has drifted out of range
 
PCM has failed
 

Trouble Code: P0712



A/T Transmission Fluid Temperature Sensor Low Input

Possible Causes:



TFT Sensor signal circuit is shorted to ground
 
TFT Sensor is damaged or has failed (it may be shorted)
 
PCM has failed
 

Trouble Code: P0713



A/T Transmission Fluid Temperature Sensor 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 (it may be open internally)
 
PCM has failed
 

Trouble Code: P0715



A/T Input Speed Sensor Circuit Malfunction

Possible Causes:



ISS signal (+) circuit is open, shorted to ground or to power
 
ISS signal (-) circuit is open, shorted to ground or to power
 
ISS is damaged or has failed (it may be open internally)
 
Overdrive clutch drum lugs are damaged or missing
 
PCM has failed
 

Trouble Code: P0720



A/T Output Speed Sensor - Low Output Above 15 MPH

Possible Causes:



OSS signal (+) circuit is open, shorted to ground or to power
 
OSS signal (-) circuit is open, shorted to ground or to power
 
OSS is damaged or has failed (it may be open internally)
 
Parking pawl lugs damaged or missing
 
PCM has failed
 

Trouble Code: P0725



A/T Engine Speed Sensor Circuit Malfunction

Possible Causes:



Check for trouble codes related to the CKP Sensor
 
CKP Sensor signal circuit open, shorted to ground or to power
 
CKP Sensor is damaged or has failed (open or shorted)
 
Intermittent wiring or connector problems
 
PCM has failed
 

Trouble Code: P0731



A/T Additional Gear Ratio Error In First Gear

Possible Causes:



U/D and 2/4 pressures less than 105 psi
 
U/D or L/R clutch volume indexes out of specification
 
L/R accumulator seals are damaged or L/R switch valve stuck
 
L/R switch valve stuck in first gear position
 
Transmission has an internal leak (U/D or other seals leaking)
 

Trouble Code: P0732



A/T Additional Gear Ratio Error In Second Gear

Possible Causes:



U/D and L/R pressures less than 95 psi at 2000 rpm
 
U/D or 2/4 clutch volume indexes out of specification
 
L/R accumulator seals are damaged or L/R switch valve stuck
 
Transmission has an internal leak (U/D or 2/4 seals leaking)
 
L/R switch valve stuck in first gear position
 

Trouble Code: P0733



A/T Additional Gear Ratio Error In Third Gear

Possible Causes:



O/D and U/D pressures less than 75 psi
 
O/D or U/D clutch volume indexes out of specification
 
O/D accumulator seals are damaged
 
L/R switch valve stuck in first gear position
 
Transmission has an internal leak (U/D seals leaking)
 

Trouble Code: P0734



A/T Additional Gear Ratio Error In Fourth Gear

Possible Causes:



Customer may complain of intermittent 4th gear operation
 
O/D and 2/4 pressures less than 75 psi
 
O/D or 2/4 clutch volume indexes out of specification
 
O/D accumulator seals are damaged
 
Transmission enters "limp in" mode running in 4th gear
 

Trouble Code: P0735



A/T Gear Ratio Error Fourth Prime

Possible Causes:



Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent)
 
Transmission has internal problems or damage present
 

Trouble Code: P0736



A/T Additional Gear Ratio Error In Reverse Gear

Possible Causes:



Customer may complain of intermittent Reverse gear operation
 
Related Gear Ratio trouble codes may be stored
 
Transmission has internal problems or damage present
 

Trouble Code: P0740



A/T Torque Converter Clutch - No RPM Drop At Lockup

Possible Causes:



Internal transmission component fault (Input or Reaction shaft)
 
Internal transmission leakage (valve body leaking or seal rings)
 
Converter clutch valve or clutch timing valve is sticking
 
TCC assembly has failed
 

Trouble Code: P0743



A/T Torque Converter Clutch Solenoid Circuit Failure

Possible Causes:



TCC power circuit is open between the solenoid and Fused B+
 
TCC solenoid control circuit is open or shorted to ground
 
TCC solenoid control circuit is shorted to system power
 
TCC solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0748



A/T Governor Pressure Solenoid/Transmission Relay Fault

Possible Causes:



A/T transmission relay power circuit is open (test power to B+)
 
A/T transmission relay is damaged or has failed
 
Governor pressure solenoid circuit is open or shorted to ground
 
Governor pressure solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0750



A/T Low/Reverse Solenoid Circuit Failure

Possible Causes:



L/R solenoid control circuit is open or shorted to ground
 
L/R solenoid control circuit is shorted to system power
 
L/R Solenoid is damaged or has failed
 
TCM or PCM has failed
 

Trouble Code: P0751



A/T Overdrive Switch Pressed Low For Over 5 Minutes

Possible Causes:



Overdrive Switch Off" circuit is shorted to ground
 
Overdrive Switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0753



A/T 3-4 Solenoid/Transmission Relay Circuit Failure

Possible Causes:



3-4 Solenoid control circuit is open or shorted to ground
 
3-4 Solenoid is damaged or has failed
 
Transmission relay power circuit is open (check the fused B+)
 
Transmission relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P0755



A/T 2/4 Solenoid Circuit Failure

Possible Causes:



2/4 Solenoid control circuit is open or shorted to ground
 
2/4 Solenoid control circuit is shorted to system power
 
2/4 Solenoid is damaged or has failed
 
TCM or PCM has failed
 

Trouble Code: P0760



A/T Overdrive Solenoid Circuit Failure

Possible Causes:



O/D Solenoid control circuit is open, shorted to ground or power
 
O/D Solenoid is damaged or has failed
 
TCM relay power circuit to O/D solenoid is open (loss of B+)
 
TCM or PCM has failed
 

Trouble Code: P0765



A/T Underdrive Solenoid Circuit Malfunction

Possible Causes:



U/D Solenoid control circuit is open or shorted to ground
 
U/D Solenoid control circuit is shorted to system power
 
U/D Solenoid is damaged or has failed
 
TCM or PCM has failed
 

Trouble Code: P0783



A/T 3-4 Shift Solenoid - No RPM Drop At Lockup

Possible Causes:



ATF fluid level is burnt, contaminated or low
 
3-4 Solenoid control circuit is open or shorted (intermittent fault)
 
3-4 Solenoid is damaged or has failed
 
Transmission oil pan has excessive debris
 

Trouble Code: P0841



Low/Reverse Pressure Switch Sense Circuit Malfunction

Possible Causes:



L/R pressure switch sense circuit is open or shorted to ground
 
L/R pressure switch sense circuit is shorted to power (B+)
 
L/R pressure switch is damaged or it has failed
 
TCM relay power circuit to L/R switch is open (loss of B+)
 
TCM has failed
 

Trouble Code: P0845



A/T 2/4 Hydraulic Pressure Test Malfunction

Possible Causes:



2/4 pressure is incorrect, or internal transmission faults exist
 
2/4 pressure switch circuit is open, shorted to ground or power
 
2/4 pressure switch is damaged or it has failed
 
Transmission solenoids/TRS assembly is damaged or have failed
 
TCM relay power circuit to 2/4 switch is open (loss of B+)
 
Intermittent wiring or connector problems exist
 
PCM or TCM has failed
 

Trouble Code: P0846



A/T 2/4 Pressure Switch Circuit Malfunction

Possible Causes:



2/4 pressure is incorrect, or internal transmission faults exist
 
2/4 pressure switch circuit is open, shorted to ground or power
 
2/4 pressure switch is damaged or it has failed
 
TCM relay power circuit to L/R switch is open (loss of B+)
 
PCM/TCM has failed
 

Trouble Code: P0850



A/T Park/Neutral Switch Performance

Possible Causes:



Check for any TCM related codes stored in the TCM controller
 
PCM has failed
 

Trouble Code: P0890



A/T TCM Switched Battery Circuit Malfunction

Possible Causes:



2/4 switch circuit is shorted to system power (B+)
 
L/R switch circuit is shorted to system power (B+)
 
O/D switch circuit is shorted to system power (B+)
 
TCM switched battery circuit is damaged
 
Intermittent wiring or connector problems exist
 
PCM/TCM has failed
 

Trouble Code: P0891



A/T TCM Relay Always On

Possible Causes:



TCM relay output circuit is shorted to system power (B+)
 
TCM relay control circuit is shorted to system power (B+)
 
TCM relay is damaged or it has failed (it may be stuck closed)
 
Intermittent wiring or connector problems exist
 
PCM/TCM has failed
 

Trouble Code: P0897



A/T Transmission Fluid Burnt Or Worn Out

Possible Causes:



Automatic transmission fluid is burnt or contaminated
 
Automatic transmission fluid is worn out
 

Trouble Code: P0951



A/T AutoStick Sensor Circuit Malfunction

Possible Causes:



AutoStick assembly is damaged or has failed
 
AutoStick connector is damaged, loose or shorted
 
Downshift switch circuit is shorted too ground
 
Upshift switch circuit is shorted to ground
 

Trouble Code: P0992



A/T 2/4 & O/D Hydraulic Pressure Test Malfunction

Possible Causes:



2/4 pressure switch circuit is open, shorted to ground or power
 
2/4 pressure switch is damaged or it has failed
 
O/D pressure switch circuit is open, shorted to ground or power
 
O/D pressure switch is damaged or it has failed
 
Internal transmission faults exist
 
TCM relay power circuit to 2/4 or O/D switch open (loss of B+)
 
PCM/TCM has failed
 

Trouble Code: P1192



Intake Air Temperature Sensor Circuit Low Input

Possible Causes:



IAT Sensor signal circuit is shorted to ground
 
IAT Sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1193



Intake Air Temperature Sensor Circuit High Input

Possible Causes:



IAT Sensor connector is damaged or it is open
 
IAT Sensor signal circuit is open between the Sensor and PCM
 
IAT Sensor ground circuit is open between the Sensor and PCM
 
IAT Sensor damaged or has failed
 
PCM has failed
 

Trouble Code: P1195



O2 (B1 S1) Circuit Insufficient Activity

Possible Causes:



Base engine mechanical fault affecting more than one cylinder
 
Exhaust leak present in exhaust manifold or exhaust pipes
 
O2 element fuel contamination or has deteriorated
 
O2 signal circuit or ground circuit has high resistance
 
PCM has failed
 

Trouble Code: P1196



O2 (B2 S1) Circuit Insufficient Activity

Possible Causes:



Base engine mechanical fault affecting more than one cylinder
 
Exhaust leak present in exhaust manifold or exhaust pipes
 
O2 element fuel contamination or has deteriorated
 
O2 signal circuit or ground circuit has high resistance
 

Trouble Code: P1281



Engine Is Cold Too Long

Possible Causes:



Check the operation of the thermostat (it may be stuck open)
 
ECT Sensor signal circuit has high resistance
 
ECT Sensor is damaged or it has failed
 
Inspect for low coolant level or an incorrect coolant mixture
 

Trouble Code: P1282



Fuel Pump Relay Control Circuit Malfunction

Possible Causes:



Fuel pump relay control circuit is open or shorted to ground
 
Fuel pump relay power circuit is open (test power from Ignition)
 
Fuel pump relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1283



Idle Select Signal Invalid

Possible Causes:



Low idle select signal circuit is open or shorted to ground
 
Low idle select signal circuit is shorted to VREF or to power
 
ECM internal circuit is shorted to ground
 
ECM internal regulator output is more than 6.0v
 
Fuel injection pump is damaged or has failed
 

 
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