BMW DTC P1594 – ‘B’ Camshaft Position Actuator Control Circuit/Open (Bank 2)
DTC P1594 meaning on BMW
The DTC P1594 on a BMW indicates a fault with the ‘B’ Camshaft Position Actuator Control Circuit on Bank 2. This means that there is an open circuit detected in the control circuit of the camshaft position actuator for the ‘B’ camshaft on the second bank of the engine.
BMW DTC P1594 symptoms
Symptoms of the DTC P1594 on a BMW may include:
- Check Engine Light illuminated
- Engine running rough or misfiring
- Reduced engine performance
- Engine stalling
BMW DTC P1594 causes
Common causes of the DTC P1594 on a BMW include:
- Faulty camshaft position actuator
- Open or short circuit in the camshaft position actuator control circuit
- Faulty wiring or connectors in the circuit
- Engine control module (ECM) issue
BMW DTC P1594 seriousness
The DTC P1594 should be addressed promptly as it can lead to engine performance issues and potential drivability concerns. Ignoring this fault may result in further damage to engine components.
How to diagnose DTC P1594 on BMW
To diagnose the DTC P1594 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors in the ‘B’ camshaft position actuator control circuit
- Test the camshaft position actuator for proper operation
- Check the ECM for any related faults
How to fix DTC P1594 on BMW
To fix the DTC P1594 on a BMW, the following steps may be taken:
- Repair or replace any damaged wiring or connectors in the control circuit
- Replace the faulty camshaft position actuator if necessary
- Clear the fault code and test drive the vehicle to ensure the issue is resolved
How to erase DTC P1594 on BMW
To erase the DTC P1594 on a BMW, a diagnostic scanner can be used to clear the fault code from the ECM’s memory. After clearing the code, it is recommended to test drive the vehicle to ensure the fault does not return.
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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