BMW DTC P104A – Camshaft Position Timing Pressure Accumulator Shutoff Valve Control Circuit Low
DTC P104A meaning on BMW
The DTC P104A code on a BMW indicates an issue with the Camshaft Position Timing Pressure Accumulator Shutoff Valve Control Circuit being detected as low. This means that there is a problem with the control circuit that manages the shutoff valve for the camshaft position timing pressure accumulator.
BMW DTC P104A symptoms
Symptoms of the BMW DTC P104A code may include rough idling, engine misfires, reduced engine performance, and potentially an illuminated check engine light on the dashboard.
BMW DTC P104A causes
The causes of the BMW DTC P104A code can vary, but common reasons include a faulty camshaft position timing pressure accumulator shutoff valve, damaged wiring or connectors in the control circuit, or issues with the engine control module (ECM).
BMW DTC P104A seriousness
Ignoring the DTC P104A code on a BMW can lead to potential engine performance issues and may cause further damage to engine components over time. It is important to address this code promptly to prevent any long-term problems.
How to diagnose DTC P104A on BMW
To diagnose the DTC P104A on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s ECM. They would then inspect the camshaft position timing pressure accumulator shutoff valve, check the wiring and connectors for any damage, and perform tests to determine the exact cause of the issue.
How to fix DTC P104A on BMW
Fixing the DTC P104A 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 addressing any issues with the ECM. It is recommended to follow the manufacturer’s repair procedures and use genuine BMW parts for the best results.
How to erase DTC P104A on BMW
Once the underlying issue causing the DTC P104A on a BMW has been fixed, the fault codes can be cleared using a diagnostic scanner. This will reset the check engine light and erase the DTC P104A code from the vehicle’s ECM memory.
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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