Volkswagen Cars 2000-05

1.9L L4 - Auto 3

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Trouble Code: P0717



Transmission Speed Shaft Sensor Signal Intermittent

Possible Causes:



TSS connector is damaged, loose or shorted
 
TSS signal circuit has an intermittent open condition
 
TSS signal circuit has an intermittent short to ground condition
 
TSS assembly is damaged or is has failed
 
ECM has failed
 

Trouble Code: P0722



A/T Output Speed Sensor No Signal

Possible Causes:



After market add-on devices interfering with the VSS signal
 
VSS sensor wiring is misrouted, damaged or shorting
 
ECM and/or TCM has failed
 

Trouble Code: P0725



Engine Speed Input Circuit Malfunction

Possible Causes:



The TCM circuit is shorting to ground, B+ or is open
 
TCM has failed
 
ECM has failed
 

Trouble Code: P0726



Engine Speed Input Circuit Range/Performance

Possible Causes:



Engine speed sensor has failed
 
Circuit is shorting to ground, B+ or is open
 
Sensor wheel is damaged, run out or not properly secured
 
ECM has failed
 

Trouble Code: P0727



Engine Speed Input Circuit No Signal

Possible Causes:



Engine speed sensor has failed
 
Circuit is shorting to ground, B+ or is open
 
Sensor wheel is damaged, run out or not properly secured
 
ECM has failed
 

Trouble Code: P0730



Gear Incorrect Ratio

Possible Causes:



ATF level is low
 
Circuit harness connector contacts are corroded or ingressed of water
 
Circuit wires have shorted to each other, to battery or ground
 
Automatic Transmission Hydraulic Pressure Sensor 1 has failed
 
Solenoid valves in valve body are faulty
 
Transmission Control Module (TCM) needs replacing
 
Transmission Input Speed (RPM) Sensor has failed
 
Transmission Output Speed (RPM) Sensor has failed
 

Trouble Code: P0731



Incorrect First Gear Ratio

Possible Causes:



1st Gear solenoid harness connector not properly seated
 
1st Gear solenoid signal shorted to ground, or open
 
1st Gear solenoid wiring harness connector is damaged
 
1st Gear solenoid is damaged or not properly installed
 
ATF level is low
 
Circuit harness connector contacts are corroded or ingressed of water
 
Circuit wires have shorted to each other, to battery or ground
 
Automatic Transmission Hydraulic Pressure Sensor 1 has failed
 
Transmission Control Module (TCM) needs replacing
 
Transmission Input Speed (RPM) Sensor has failed
 
Transmission Output Speed (RPM) Sensor has failed
 

Trouble Code: P0732



Incorrect Second Gear Ratio

Possible Causes:



2nd Gear solenoid harness connector not properly seated
 
2nd Gear solenoid signal shorted to ground, or open
 
2nd Gear solenoid wring harness connector is damaged
 
2nd Gear solenoid is damaged or not properly installed
 
ATF level is low
 
Circuit harness connector contacts are corroded or ingressed of water
 
Circuit wires have shorted to each other, to battery or ground
 
Automatic Transmission Hydraulic Pressure Sensor 1 has failed
 
Transmission Control Module (TCM) needs replacing
 
Transmission Input Speed (RPM) Sensor has failed
 
Transmission Output Speed (RPM) Sensor has failed
 

Trouble Code: P0733



Incorrect Third Gear Ratio

Possible Causes:



3rd Gear solenoid harness connector not properly seated
 
3rd Gear solenoid signal shorted to ground, or open
 
3rd Gear solenoid wiring harness connector is damaged
 
3rd Gear solenoid is damaged or not properly installed
 
ATF level is low
 
Circuit harness connector contacts are corroded or ingressed of water
 
Circuit wires have shorted to each other, to battery or ground
 
Automatic Transmission Hydraulic Pressure Sensor 1 has failed
 
Transmission Control Module (TCM) needs replacing
 
Transmission Input Speed (RPM) Sensor has failed
 
Transmission Output Speed (RPM) Sensor has failed
 

Trouble Code: P0734



Incorrect Fourth Gear Ratio

Possible Causes:



4th Gear solenoid harness connector not properly seated
 
4th Gear solenoid signal shorted to ground, or open
 
4th Gear solenoid wiring harness connector is damaged
 
4th Gear solenoid is damaged or not properly installed
 
ATF level is low
 
Circuit harness connector contacts are corroded or ingressed of water
 
Circuit wires have shorted to each other, to battery or ground
 
Automatic Transmission Hydraulic Pressure Sensor 1 has failed
 
Transmission Control Module (TCM) needs replacing
 
Transmission Input Speed (RPM) Sensor has failed
 
Transmission Output Speed (RPM) Sensor has failed
 

Trouble Code: P0740



TCC Solenoid Circuit Malfunction

Possible Causes:



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

Trouble Code: P0743



Torque Converter Clutch Circuit Electrical Malfunction

Possible Causes:



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

Trouble Code: P0746



Pressure Control Solenoid -A- Performance or Stuck Off

Possible Causes:



ATF level is low
 
Circuit harness connector contacts are corroded or ingressed of water
 
Circuit wires have shorted to each other, to battery or ground
 
Automatic Transmission Hydraulic Pressure Sensor 1 has failed
 
Solenoid valves in valve body are faulty
 
Transmission Control Module (TCM) needs replacing
 
Transmission Input Speed (RPM) Sensor has failed
 
Transmission Output Speed (RPM) Sensor has failed
 

Trouble Code: P0748



Pressure Control Solenoid Electrical

Possible Causes:



Pressure control solenoid circuit is shorting to ground
 
Pressure control solenoid circuit is open
 
Valve has failed
 
TCM has failed
 
ECM has failed
 

Trouble Code: P0753



A/T Shift Solenoid 1/A Circuit Malfunction

Possible Causes:



SS1/A solenoid control circuit is open
 
SS1/A solenoid control circuit is shorted to ground
 
SS1/A solenoid wiring harness connector is damaged
 
SS1/A solenoid is damaged or has failed
 
ECM has failed
 

Trouble Code: P0758



A/T Shift Solenoid 2/B Circuit Malfunction

Possible Causes:



Shift Solenoid 2/B connector is damaged, open or shorted
 
Shift Solenoid 2/B control circuit is open
 
Shift Solenoid 2/B control circuit is shorted to ground
 
Shift Solenoid 2/B is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0763



A/T Shift Solenoid 3/C Electrical

Possible Causes:



Shift Solenoid 3/C connector is damaged, open or shorted
 
Shift Solenoid 3/C control circuit is open
 
Shift Solenoid 3/C control circuit is shorted to ground
 
Shift Solenoid 3/C is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0773



A/T Shift Solenoid E Electrical

Possible Causes:



Shift Solenoid connector is damaged, open or shorted
 
Shift Solenoid control circuit is open
 
Shift Solenoid control circuit is shorted to ground
 
Shift Solenoid is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0778



Pressure Control Solenoid -B- Electrical

Possible Causes:



Shift Solenoid connector is damaged, open or shorted
 
Shift Solenoid control circuit is open
 
Shift Solenoid control circuit is shorted to ground
 
Shift Solenoid is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0785



Shift/Timing Solenoid

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
ECM has failed
 
Mechanical malfunction in transmission
 

Trouble Code: P0791



Intermediate Shaft Speed Sensor -A- Circuit

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
ECM has failed
 
Mechanical malfunction in transmission
 

Trouble Code: P0811



Excessive Clutch Slippage

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
ECM has failed
 

Trouble Code: P0863



TCM Communication Circuit

Possible Causes:



ECM has failed
 
Terminal resistance for CAN-bus are faulty
 
Can data bus wires have short circuited to each other
 
TCM has failed
 

Trouble Code: P0864



TCM Communication Circuit Range/Performance

Possible Causes:



ECM has failed
 
Terminal resistance for CAN-bus are faulty
 
Can data bus wires have short circuited to each other
 
TCM has failed
 

Trouble Code: P0865



TCM Communication Circuit Low

Possible Causes:



ECM has failed
 
Terminal resistance for CAN-bus are faulty
 
Can data bus wires have short circuited to each other
 
TCM has failed
 

Trouble Code: P1026



Activation Intake Manifold Flap for Air Stream Regulation Short Circuit to B+

Possible Causes:



Check activation of intake manifold flap for air stream regulation
 

Trouble Code: P1027



Activation Intake Manifold Flap for Air Stream Regulation Short Circuit to Ground

Possible Causes:



Check activation of intake manifold flap for air stream regulation
 

Trouble Code: P1028



Activation Intake Manifold Flap for Air Stream Regulation Open Circuit

Possible Causes:



Check activation of intake manifold flap for air stream regulation
 

Trouble Code: P1778



Solenoid EV7 Electrical Malfunction

Possible Causes:



Valve body solenoid valve has a short
 
The TCM has failed
 
ECM has failed
 

Trouble Code: P1780



Engine Intervention Readable

Possible Causes:



TCS circuit open or shorted in the wiring harness
 
TCS not cycled during the self-test
 
TCS is damaged or failed, or the ECM has failed
 
Check ATF level
 
Mechanical malfunction in transmission
 

Trouble Code: P1850



Data BUS Powertrain Missing Message from Engine Control

Possible Causes:



Check the Terminal resistance for CAN-bus
 
Data-Bus wires have short
 
Data-Bus components are malfunctioning
 
ECM has failed
 

Trouble Code: P1854



Data BUS Powertrain Hardware Defective

Possible Causes:



Check the Terminal resistance for CAN-bus
 
Data-Bus wires have short
 
Data-Bus components are malfunctioning
 
ECM has failed
 

Trouble Code: P1855



Data BUS Powertrain Software Version Control

Possible Causes:



Check the Terminal resistance for CAN-bus
 
Data-Bus wires have short
 
Data-Bus components are malfunctioning
 
ECM has failed
 

Trouble Code: P1857



Load Signal Error Message From Engine Control

Possible Causes:



Intake Manifold Runner Position Sensor is faulty
 
Intake system has leaks (false air)
 
Motor for intake flap is faulty
 
Mass Air Flow (MAF) sensor has failed
 
ECM has failed
 

Trouble Code: P1866



Data Bus Powertrain Missing Messages

Possible Causes:



Check the Terminal resistance for CAN-bus
 
Data-Bus wires have short
 
Data-Bus components are malfunctioning
 
ECM has failed
 

Trouble Code: P2100



Throttle Actuator Control Motor Circuit Open

Possible Causes:



TACM wiring harness connector is damaged or open
 
TACM wiring may be crossed in the wire harness assembly
 
TACM (motor) circuit is open, or TACM assembly is damaged (possible open circuit)
 
TACM or the Throttle Valve is dirty
 
Throttle Position sensor has failed
 
ECM has failed
 

Trouble Code: P2102



Throttle Actuator Control Motor Circuit Low

Possible Causes:



TACM wiring harness connector is damaged or open
 
TACM wiring may be crossed in the wire harness assembly
 
TACM (motor) circuit is open, or TACM assembly is damaged (possible open circuit)
 
TACM or the Throttle Valve is dirty
 
Throttle Position sensor has failed
 
ECM has failed
 

Trouble Code: P2103



Throttle Actuator Control Motor Circuit High

Possible Causes:



TACM wiring harness connector is damaged or open
 
TACM wiring may be crossed in the wire harness assembly
 
TACM (motor) circuit is open, or TACM assembly is damaged (possible open circuit)
 
TACM or the Throttle Valve is dirty
 
Throttle Position sensor has failed
 
ECM has failed
 

Trouble Code: P2108



Throttle Actuator Control Motor Performance

Possible Causes:



TACM wiring harness connector is damaged or open
 
TACM wiring may be crossed in the wire harness assembly
 
TACM (motor) circuit is open, or TACM assembly is damaged (possible open circuit)
 
TACM or the Throttle Valve is dirty
 
Throttle Position sensor has failed
 
ECM has failed
 

Trouble Code: P2122



Accelerator Pedal Position Sensor 'D' Circuit Low Input

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor has failed
 
Throttle position sensor wiring may have shorted
 
Throttle position sensor has failed
 
Faulty voltage supply
 
ECM has failed
 

 
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