What does it mean?
P1529 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Camshaft Control Circuit Short to B+ .
Symptoms
- Check engine light on with a rough idle
- Solenoid effectively energised all the time, so camshaft timing sticks in one position
- Loss of torque and a hesitant response when accelerating
- Rattle on start-up from the timing drive
- Increased fuel consumption
- Fault returns quickly after the code is cleared
Likely causes
- Control wire shorted to a positive feed where insulation has rubbed or melted near hot components
- Corrosion inside the solenoid connector bridging the supply pin to the control pin
- Internal short between the winding and the supply side of the solenoid
- Incorrect wiring or a poor splice made during a previous repair
- Damaged harness after work on the cylinder head, coils or timing cover
- Module driver that can no longer pull the output low
How to fix it
- Unplug the solenoid, switch the ignition on with no command and measure the control pin to ground
- Unplug the module connector too; if battery voltage is still present, the short is in the harness
- Inspect the harness where it passes exhaust components, the alternator feed and ignition wiring for melted insulation
- Check the connector for corrosion and for leakage between the pins
- Measure the winding resistance and check for continuity between the winding and the solenoid body
- Repair the harness and replace a damaged connector
- Replace the camshaft control solenoid if it is internally shorted, then verify cam angle response in live data