Volkswagen Cars 2000-05

2.0L L4 VIN E Auto 9

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Trouble Code: P1569



Cruise Control Switch Incorrect Signal

Possible Causes:



Check Cruise Control System (CCS) wiring shorts to ground or B+
 

Trouble Code: P1580



Throttle Actuator B1 Malfunction

Possible Causes:



The throttle position actuator B1 circuit is open
 
The ECM has failed
 
The throttle valve control module circuit is open
 
The throttle position actuator has failed
 

Trouble Code: P1582



Idle Adaptation at Limit

Possible Causes:



Crankcase oil is diluted (change the oil)
 
Fuel injectors are worn
 
Compression ratio is low
 
Throttle valve control module is faulty
 
Leak Detection Pump has failed
 
EVAP canister system has an improper or broken seal
 
Evaporative Emission (EVAP) canister purge regulator valve 1 is faulty
 
Hoses between the fuel pump and the EVAP canister are faulty
 
Fuel filler cap is loose
 
Fuel pump seal is defective, faulty or otherwise leaking
 
Hoses between the EVAP canister and the fuel flap unit are faulty
 
Hoses between the EVAP canister and the evaporative emission canister purge regulator valve are faulty
 
ECM has failed
 

Trouble Code: P1592



Barometric/Boost Pressure Signal Ratio out of Range

Possible Causes:



Charge air pressure sensor is faulty
 
Voltage supply to the charge air pressure sensor is open or shorted
 
Check the charge air system for leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system is damaged or not functioning properly
 
Turbocharger recirculating valve is faulty
 
Vacuum diaphragm for turbocharger is out of adjustment
 
Wastegate bypass regulator valve is faulty
 
Boost sensor has failed
 
ECM has failed
 

Trouble Code: P1602



Power Supply (B+) Terminal 15 Low Voltage

Possible Causes:



(If ECM was replaced) ECM ID not the same as the replaced unit
 
ECM has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1603



Internal Control Module Malfunction

Possible Causes:



(If ECM was replaced) ECM ID not the same as the replaced unit
 
ECM has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1604



Internal Control Module Driver Error

Possible Causes:



(If ECM was replaced) ECM ID not the same as the replaced unit
 
ECM has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1606



Rough Road Spec Engine Torque ABS-ECU Electrical Malfunction

Possible Causes:



Check wire connection between Engine Control Module (ECM) and ABS Control Module
 

Trouble Code: P1609



Crash Shut-Down Activated

Possible Causes:



Check the vehicle for damage
 
Reset the ECU
 

Trouble Code: P1610



ECU Defective

Possible Causes:



(If ECM was replaced) ECM ID not the same as the replaced unit
 
ECM has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1611



MIL Call-Up Circuit, Transmission Control Module Short to Ground

Possible Causes:



Open/short circuit to ground in the communication wire from the transmission to the ECM.
 
The ECM has failed
 

Trouble Code: P1612



Electronic Control Module Incorrect Coding

Possible Causes:



(If ECM was replaced) ECM ID not the same as the replaced unit
 
ECM has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1613



MIL Call-up Circuit Open/Short to B+

Possible Causes:



Open/short circuit to ground from the MIL to the ECM.
 
The ECM has failed
 
The MIL light has failed (check bulb)
 

Trouble Code: P1624



MIL Requested Signature Active

Possible Causes:



(If ECM was replaced) ECM ID not the same as the replaced unit
 
ECM has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1626



Data BUS Powertrain Missing Message From Transmission Control

Possible Causes:



(If ECM was replaced) ECM ID not the same as the replaced unit
 
ECM has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1630



Acceleration Pedal Position Sensor 1 Signal Too Low

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 
ECM has failed
 

Trouble Code: P1631



Acceleration Pedal Position Sensor 1 Signal Too High

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 
ECM has failed
 

Trouble Code: P1633



Acceleration Pedal Position Sensor 2 Signal Too Low

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 
ECM has failed
 

Trouble Code: P1634



Acceleration Pedal Position Sensor 2 Signal Too High

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 
ECM has failed
 

Trouble Code: P1635



Data BUS Powertrain Missing Message From Central A/C 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: P1639



Accelerator Pedal Position Sensor 1+2 Range/Performance

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 
ECM has failed
 

Trouble Code: P1640



Internal Control Module (EEPROM) Error

Possible Causes:



Engine Control Module (ECM) has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1647



Please Check Coding of the ECUs in the Data Bus Powertrain

Possible Causes:



Engine Control Module (ECM) has failed
 
Voltage supply for Engine Control Module (ECM) has shorted
 

Trouble Code: P1648



Data Bus Powertrain Malfunction

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 
ECM has failed
 

Trouble Code: P1649



Data Bus Powertrain Missing Message from ABS Control Module

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 
Check the Terminal resistance for CAN-bus
 
Data-Bus wires have short
 
Data-Bus components are malfunctioning
 
ECM has failed
 

Trouble Code: P1650



Data Bus Powertrain Missing Message from Instrument Panel ECU

Possible Causes:



Ground between engine and chassis may be broken
 
Faulty voltage supply
 
ECM has failed
 

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: P1823



Pressure Control Solenoid 3 Electrical

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
 
Check harness connector for contact corrosion or water damage
 
Check resistance of solenoid valves may not be up to specification
 
Wires to Transmission Control Module (TCM) may have ground out or open
 
Transmission Control Module (TCM) has failed
 
ECM has failed
 

Trouble Code: P1828



Pressure Control Solenoid 4 Electrical

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
 
Check harness connector for contact corrosion or water damage
 
Check resistance of solenoid valves may not be up to specification
 
Wires to Transmission Control Module (TCM) may have ground out or open
 
Transmission Control Module (TCM) has failed
 
ECM has failed
 

Trouble Code: P1847



Please Check DTC Memory of Brake System ECU

Possible Causes:



Fuses on E-box in engine compartment, left side, may be faulty
 
Check harness connector for contact corrosion or water damage
 
Check resistance of solenoid valves may not be up to specification
 
Solenoid valve may be faulty
 
Wires to Transmission Control Module (TCM) may have ground out or open
 
Transmission Control Module (TCM) has failed
 

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: P1853



Data BUS Powertrain Implausible Message from Brake 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: P1861



Throttle Position Sensor Message from ECM

Possible Causes:



Throttle Position (TP) Sensor has failed
 
Accelerator Pedal Position Sensor 2 has failed
 
ECM has failed
 
Ground (GND) connections between engine and chassis must be OK
 
Engine Control Module (ECM) may not connected
 

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: P2088



-A- Camshaft Position Control Circuit Low Bank 1

Possible Causes:



Camshaft position control wiring harness connector is damaged or open
 
Camshaft adjustment valve has failed
 
Circuit is open or grounded
 
Assembly is damaged or it has failed (an open circuit)
 
ECM power supply relay has failed
 
ECM has failed
 

Trouble Code: P2090



-B- Camshaft Position Control Circuit Low Bank 1

Possible Causes:



Camshaft position control wiring harness connector is damaged or open
 
Camshaft adjustment valve has failed
 
Circuit is open or grounded
 
Assembly is damaged or it has failed (an open circuit)
 
ECM power supply relay has failed
 
ECM has failed
 

Trouble Code: P2091



-B- Camshaft Position Control Circuit High Bank 1

Possible Causes:



Camshaft position control wiring harness connector is damaged or open
 
Camshaft adjustment valve has failed
 
Circuit is open or grounded
 
Assembly is damaged or it has failed (an open circuit)
 
ECM power supply relay has failed
 
ECM has failed
 

 
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