BMW DTC P104C – Camshaft Position Timing Pressure Accumulator Shutoff Valve Control Circuit/Open
DTC P104C meaning on BMW
The DTC P104C code on a BMW refers to a fault in the Camshaft Position Timing Pressure Accumulator Shutoff Valve Control Circuit, indicating an open circuit condition.
BMW DTC P104C symptoms
Symptoms of the DTC P104C code on a BMW may include rough idling, engine misfires, reduced engine performance, and in some cases, the vehicle may go into a limp mode.
BMW DTC P104C causes
The common causes of the DTC P104C code on a BMW include a faulty camshaft position timing pressure accumulator shutoff valve, damaged wiring or connectors in the control circuit, or a malfunction in the engine control module (ECM).
BMW DTC P104C seriousness
While the DTC P104C code may not cause immediate harm to the vehicle, it can lead to poor engine performance and potentially affect the overall drivability of the BMW. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P104C on BMW
To diagnose the DTC P104C code on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then inspect the camshaft position timing pressure accumulator shutoff valve, check the wiring and connectors for any damage, and perform a thorough visual inspection of the components involved in the control circuit.
How to fix DTC P104C on BMW
Fixing the DTC P104C code on a BMW may involve replacing the faulty camshaft position timing pressure accumulator shutoff valve, repairing any damaged wiring or connectors in the control circuit, or reprogramming the engine control module (ECM) if necessary. It is recommended to follow the manufacturer’s diagnostic and repair procedures to address this issue effectively.
How to erase DTC P104C on BMW
Once the underlying issue causing the DTC P104C code on a BMW has been resolved, the code can be cleared using a diagnostic scanner. By accessing the ECM and selecting the option to clear fault codes, the DTC P104C code will be erased from the system, and the Check Engine Light should turn off.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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