Ram 1500, 2500, 3500, 2WD and 4WD, 2001-2005

3.9L V6 VIN X Auto 5

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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: P0867



A/T Line Pressure Malfunction

Possible Causes:



Check for related trouble codes
 
Check TCM connectors for loose or damaged terminals
 
A/T line pressure is out of range
 
TCM line pressure is out of range
 

Trouble Code: P0868



A/T Line Pressure Low

Possible Causes:



Check for related trouble codes
 
Check TCM connectors for loose or damaged terminals
 
A/T line pressure is out of range
 
TCM line pressure is out of range
 

Trouble Code: P0869



A/T Line Pressure High

Possible Causes:



Check for related trouble codes
 
Check TCM connectors for loose or damaged terminals
 
A/T line pressure is out of range
 
TCM line pressure is out of range
 

Trouble Code: P0870



A/T Hydraulic Pressure Line Malfunction

Possible Causes:



Check for related line pressure trouble codes
 
Check for related speed ratio and pressure switch codes
 
5v supply circuit is open or is shorted to ground
 
Transmission Control Relay output circuit is open
 
OD Pressure Switch sense circuit is shorted to ground or to voltage
 
Excessive debris in the oil pan
 
Line pressure Sensor connector is loose or damaged
 
Oil pressure switch is damaged or has failed
 
Intermittent wiring or connector problems exist
 
PCM or TCM has failed
 

Trouble Code: P0871



A/T O/D Pressure Switch Circuit Malfunction

Possible Causes:



Related DTCs may be present
 
O/D pressure is incorrect, or internal transmission faults exist
 
O/D pressure switch circuit is open, shorted to ground or power
 
O/D pressure switch is damaged or it has failed
 
TCM relay power circuit to O/D switch is open (loss of B+)
 
Intermittent wiring or connector problems exist
 
PCM or TCM has failed
 

Trouble Code: P0875



A/T U/D Hydraulic Pressure Test Malfunction

Possible Causes:



Check for related line pressure trouble codes
 
Check for related speed ratio and pressure switch codes
 
5v supply circuit is open or shorted to ground
 
U/D Pressure switch sense circuit is open or shorted to ground or to voltage
 
Excessive debris in the oil pan
 
Line pressure Sensor connector is loose or damaged
 
U/D Oil Pressure Switch is damaged or it has failed
 
TCM has failed
 
Intermittent wiring and connector problems
 

Trouble Code: P0876



A/T U/D Pressure Switch Sense Malfunction

Possible Causes:



U/D pressure is incorrect, or internal transmission faults exist
 
U/D pressure switch circuit is open, shorted to ground or power
 
U/D 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: P0884



A/T U/D Pressure Switch Sense Malfunction

Possible Causes:



U/D pressure is incorrect, or internal transmission faults exist
 
U/D pressure switch circuit is open, shorted to ground or power
 
U/D 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: 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: P0932



A/T Line Pressure Malfunction

Possible Causes:



Line pressure Sensor connector is damaged or loose
 
Line pressure Sensor circuit is open or shorted to ground
 
Line pressure Sensor circuit is shorted to VREF (5v)
 
Line pressure Sensor ground circuit is open
 
Line pressure Sensor supply circuit (5v) is open or missing
 
TCM Line Pressure Low or High circuit is open
 

Trouble Code: P0944



A/T Loss Of Prime Pressure

Possible Causes:



A/T pressure switch connector is damaged, loose or shorted
 
Invalid PRNDL code (shift lever position error)
 
Automatic transmission fluid level is too low
 
Transmission oil filter is clogged or severely restricted
 
Transmission oil pump is damaged or weak
 
Intermittent wiring or connector problems exist
 

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: P0987



A/T 4C Hydraulic Pressure Test Malfunction

Possible Causes:



Check for related speed ratio and pressure switch codes
 
Excessive debris in the oil pan
 
5v supply circuit is open or is shorted to ground
 
Transmission Control Relay output circuit is open
 
4C Pressure Switch sense circuit is shorted to ground or to voltage
 
Line Pressure Sensor connector is loose or damaged
 
4C Line Pressure Sensor has failed
 
Transmission Solenoid/TRS Assembly has failed
 
Internal transmission problems
 
TCM has failed
 
Intermittent wiring and connector problems
 

Trouble Code: P0988



A/T 4C Pressure Switch Sense Circuit Malfunction

Possible Causes:



4C pressure is incorrect, or internal transmission faults exist
 
4C Pressure Switch sense circuit is open, shorted to ground or power
 
4C 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
 
Intermittent wiring and connector problems
 

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: P1115



General Temperature Sensor Performance

Possible Causes:



Sensor signal circuit is open or shorted to ground
 
Sensor ground circuit is open or shorted to VREF (5v)
 
One or more of the identified Sensors is out-of-calibration
 
Ambient air temperature Sensor is damaged or it has failed
 
PCM High or Low circuit is damaged or it 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
 

 
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