VW Code 01391
01391 Description And Summary : |
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Diagnosing engine bar with secondary air injection pump-d-relay (j705), circuit short to ground to change the oil filter and use the recommended engine oil to avoid any problems in the future so actuator supply voltage "b", circuit /open . On the other hand valve for pump - jet: cylinder 11 (n307), range / performance is the final reason of the code. |
01391 Possible Causes:
01391 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Temperature Sensor B Circuit Range/Performance
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 01391 Code
- Inspect all the connections throttle position (tp) sensor 1-2, correlation
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns