Volkswagen Cars 2000-05

2.0L L4 VIN B Std 5

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Trouble Code: P1180



Linear 02 Sensor / Pump Current Short to B+

Possible Causes:



O2 sensor circuit has shorted to ground or B+
 
O2 sensor circuit is open
 
ECM has failed
 
O2 sensor has failed
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 

Trouble Code: P1181



Linear 02 Sensor / Reference Voltage Open Circuit

Possible Causes:



O2 sensor circuit has shorted to ground or B+
 
O2 sensor circuit is open
 
ECM has failed
 
O2 sensor has failed
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 

Trouble Code: P1182



Linear O2 Sensor/Reference Voltage Short to Ground

Possible Causes:



O2 sensor circuit has shorted to ground or B+
 
O2 sensor circuit is open
 
ECM has failed
 
O2 sensor has failed
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 

Trouble Code: P1183



Linear 02 Sensor / Reference Voltage Short to B+

Possible Causes:



O2 sensor circuit has shorted to ground or B+
 
O2 sensor circuit is open
 
ECM has failed
 
O2 sensor has failed
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 

Trouble Code: P1184



Linear 02 Sensor / Common Ground Wire Open Circuit

Possible Causes:



O2 sensor circuit has shorted to ground or B+
 
O2 sensor circuit is open
 
ECM has failed
 
O2 sensor has failed
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 

Trouble Code: P1185



Linear O2 Sensor/Common Ground Wire Short to Ground

Possible Causes:



O2 sensor circuit has shorted to ground or B+
 
O2 sensor circuit is open
 
ECM has failed
 
O2 sensor has failed
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 

Trouble Code: P1186



Linear O2 Sensor/Common Ground Wire Short to B+

Possible Causes:



O2 sensor circuit has shorted to ground or B+
 
O2 sensor circuit is open
 
ECM has failed
 
O2 sensor has failed
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 

Trouble Code: P1196



O2 Sensor Heater Circuit (Bank 1-Sensor 1) Electrical Malfunction

Possible Causes:



HO2S heater power circuit is open
 
HO2S heater ground circuit is open
 
HO2S signal tracking (due to oil or moisture in the connector)
 
HO2S is damaged or has failed
 
ECM has failed
 
Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor (behind catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 

Trouble Code: P1198



O2 Sensor Heater Circuit (Bank 1-Sensor 2) Electrical Malfunction

Possible Causes:



HO2S heater power circuit is open
 
HO2S heater ground circuit is open
 
HO2S signal tracking (due to oil or moisture in the connector)
 
HO2S is damaged or has failed
 
ECM has failed
 
Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor (behind catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 

Trouble Code: P1201



Cylinder 1 Fuel Injection Circuit Electrical Malfunction

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Fuel injectors may have malfunctioned
 
Faulty engine speed sensor
 

Trouble Code: P1202



Cylinder 2 Fuel Injection Circuit Electrical Malfunction

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Fuel injectors may have malfunctioned
 
Faulty engine speed sensor
 

Trouble Code: P1203



Cylinder 3 Fuel Injection Circuit Electrical Malfunction

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Fuel injectors may have malfunctioned
 
Faulty engine speed sensor
 

Trouble Code: P1204



Cylinder 4 Fuel Injection Circuit Electrical Malfunction

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Fuel injectors may have malfunctioned
 
Faulty engine speed sensor
 

Trouble Code: P1213



Cylinder 1 Fuel Injection Circuit Short to B+

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1214



Cylinder 2 Fuel Injection Circuit Short to B+

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1215



Cylinder 3 Fuel Injection Circuit Short to B+

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1216



Cylinder 4 Fuel Injection Circuit Short to B+

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1225



Cylinder 1 Fuel Injection Circuit Short to Ground

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1226



Cylinder 2 Fuel Injection Circuit Short to Ground

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1227



Cylinder 3 Fuel Injection Circuit Short to Ground

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1228



Cylinder 4 Fuel Injection Circuit Short to Ground

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1237



Cylinder 1 Fuel Injection Circuit Open Circuit

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1238



Cylinder 2 Fuel Injection Circuit Open Circuit

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1239



Cylinder 3 Fuel Injection Circuit Open Circuit

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1240



Cylinder 4 Fuel Injection Circuit Open Circuit

Possible Causes:



Injector control circuit is open
 
Injector power circuit (B+) is open
 
Injector control circuit is shorted to chassis ground
 
Injector is damaged or has failed
 
ECM is not connected or has failed
 
Fuel pump relay has failed
 
Engine speed sensor has failed
 

Trouble Code: P1250



Fuel Pressure Regulator Control Circuit Malfunction (Fuel Level too Low)

Possible Causes:



FPRC solenoid valve harness circuits are open or shorted
 
FPRC input port or output port vacuum lines are damaged
 
FRPC solenoid is damaged
 
Fuel level is too low
 
ECM has failed
 

Trouble Code: P1255



Engine Coolant Temperature Circuit Short to Ground

Possible Causes:



Coolant Temperature Sensor has failed
 
Circuit short to ground, open or other component
 
ECM has failed
 

Trouble Code: P1256



Engine Coolant Temperature Circuit Open/Short to B+

Possible Causes:



Coolant Temperature Sensor has failed
 
Circuit short to ground, open or other component
 
ECM has failed
 

Trouble Code: P1287



Turbocharger Bypass Valve Open

Possible Causes:



Charge air system check for leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system may be damaged
 
Vacuum diaphragm for turbocharger needs adjusting
 
Wastegate bypass regulator valve is faulty
 
Bypass solenoid power supply circuit is open
 
Bypass solenoid control circuit is open, shorted to ground or system power
 
Bypass solenoid assembly is damaged or has failed
 
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
 
ECM has failed
 

Trouble Code: P1288



Turbocharger Bypass Valve Short to B+

Possible Causes:



Charge air system check for leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system may be damaged
 
Vacuum diaphragm for turbocharger needs adjusting
 
Wastegate bypass regulator valve is faulty
 
Bypass solenoid power supply circuit is open
 
Bypass solenoid control circuit is open, shorted to ground or system power
 
Bypass solenoid assembly is damaged or has failed
 
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
 
ECM has failedvalve is faulty
 

Trouble Code: P1289



Turbocharger Bypass Valve Short to Ground

Possible Causes:



Charge air system check for leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system may be damaged
 
Vacuum diaphragm for turbocharger needs adjusting
 
Wastegate bypass regulator valve is faulty
 
Bypass solenoid power supply circuit is open
 
Bypass solenoid control circuit is open, shorted to ground or system power
 
Bypass solenoid assembly is damaged or has failed
 
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
 
ECM has failed
 

Trouble Code: P1295



Turbocharger Bypass Valve Throughput Faulty

Possible Causes:



Charge air system check for leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system may be damaged
 
Vacuum diaphragm for turbocharger needs adjusting
 
Wastegate bypass regulator valve is faulty
 
Bypass solenoid power supply circuit is open
 
Bypass solenoid control circuit is open, shorted to ground or system power
 
Bypass solenoid assembly is damaged or has failed
 
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
 
ECM has failed
 

Trouble Code: P1296



Cooling System Malfunction

Possible Causes:



Engine coolant temperature sensor has failed
 
An open circuit or a short to B+ is present
 
Sensor circuit is short to ground
 
ECM has failed
 

Trouble Code: P1297



Connection Turbocharger/Throttle Valve Pressure Hose

Possible Causes:



Charge air system check for leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system may be damaged
 
Vacuum diaphragm for turbocharger needs adjusting
 
Wastegate bypass regulator valve is faulty
 
Bypass solenoid power supply circuit is open
 
Bypass solenoid control circuit is open, shorted to ground or system power
 
Bypass solenoid assembly is damaged or has failed
 
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
 
ECM has failed
 

Trouble Code: P1300



Misfire Detected Reason: Fuel Level Too Low

Possible Causes:



Fuel level too low
 
Fuel leak
 
Fuel injector faulty
 

Trouble Code: P1325



Cylinder 1-Knock Control Limit Attained

Possible Causes:



Knock sensor circuit is open
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Poor fuel quality
 
Loosen knock sensors and tighten again to 20 Nm
 
ECM has failed
 

Trouble Code: P1326



Cylinder 2-Knock Control Limit Attained

Possible Causes:



Knock sensor circuit is open
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Poor fuel quality
 
Loosen knock sensors and tighten again to 20 Nm
 
ECM has failed
 

Trouble Code: P1327



Cylinder 3-Knock Control Limit Attained

Possible Causes:



Knock sensor circuit is open
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Poor fuel quality
 
Loosen knock sensors and tighten again to 20 Nm
 
ECM has failed
 

Trouble Code: P1328



Cylinder 4-Knock Control Limit Attained

Possible Causes:



Knock sensor circuit is open
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
ECM has failed
 

Trouble Code: P1335



Engine Torque Monitoring 2 Control Limit Exceeded

Possible Causes:



Engine Control Module (ECM) has failed
 
Voltage supply for Engine Control Module (ECM) is shorted
 
Engine Coolant Temperature (ECT) sensor is faulty
 
Intake Air Temperature (IAT) sensor is faulty
 
Intake Manifold Runner Position Sensor is faulty
 
Intake system for leaks (false air) is faulty
 
Motor for intake flap is faulty
 
Mass Air Flow (MAF) sensor is faulty
 

 
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