What does code P1594 mean?

Q: What does code P1594 mean?

B Camshaft Position Actuator Control Open Circuit Bank 2. The P1594 code on BMW vehicles indicates that the engine control module (DME) has detected an open circuit in the control wiring for the bank 2 camshaft position actuator, which is the solenoid that adjusts camshaft timing. This means the electrical path to the actuator is broken, so the DME cannot command variable valve timing on that bank, potentially affecting engine performance and emissions.

DTC codes / BMW codes / P1594

P1594 · BMWB Camshaft Position Actuator Control Open Circuit Bank 2

The P1594 code on BMW vehicles indicates that the engine control module (DME) has detected an open circuit in the control wiring for the bank 2 camshaft position actuator, which is the solenoid that adjusts camshaft timing. This means the electrical path to the actuator is broken, so the DME cannot command variable valve timing on that bank, potentially affecting engine performance and emissions.

SystemPowertrain

Code typeBMW specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for BMW vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.