Volkswagen DTC P1391 – CMP Sensor Bank 2 Short To Ground
DTC P1391 meaning on Volkswagen
DTC P1391 on a Volkswagen indicates a fault with the Camshaft Position Sensor (CMP) on Bank 2. The code specifically points to a short to ground in the circuit of the CMP sensor on Bank 2.
Volkswagen DTC P1391 symptoms
Symptoms of DTC P1391 on a Volkswagen may include rough idling, engine misfires, poor acceleration, stalling, and in some cases, the Check Engine Light may illuminate on the dashboard.
Volkswagen DTC P1391 causes
The most common causes of DTC P1391 on a Volkswagen are a faulty Camshaft Position Sensor (CMP) on Bank 2, damaged wiring or connectors in the CMP sensor circuit, or a short to ground in the circuit.
Volkswagen DTC P1391 seriousness
While DTC P1391 may not cause immediate harm to the engine, it can lead to poor performance and drivability issues. Ignoring this fault can potentially cause further damage to the engine over time.
How to diagnose DTC P1391 on Volkswagen
To diagnose DTC P1391 on a Volkswagen, start by visually inspecting the wiring and connectors related to the CMP sensor on Bank 2. Check for any visible damage or corrosion. Use a multimeter to test the continuity and resistance in the circuit. If the wiring and connectors are in good condition, then test the CMP sensor itself for proper operation.
How to fix DTC P1391 on Volkswagen
To fix DTC P1391 on a Volkswagen, first, replace the Camshaft Position Sensor (CMP) on Bank 2 if it is found to be faulty. Ensure that the wiring and connectors in the circuit are in good condition and repair or replace any damaged components. Clear the fault code and test drive the vehicle to confirm that the issue has been resolved.
How to erase DTC P1391 on Volkswagen
To erase DTC P1391 on a Volkswagen, you can use an OBD-II scanner to clear the fault code from the vehicle’s ECU. Once the issue has been fixed and the fault code cleared, the Check Engine Light should turn off. It is important to ensure that the underlying issue causing the fault code has been properly addressed before clearing the code.
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