The OBD code P0012 for BMW indicates a Camshaft Position ‘A’ Timing OverRetarded error.
This code affects the VANOS system and can lead to symptoms like the Engine Light being ON.
Causes include low/dirty engine oil, faulty VANOS solenoid, or camshaft position sensor, and mechanical timing issues.
While not an immediate threat, it should be addressed promptly to prevent further damage.
A possible fix involves checking and potentially replacing the VANOS solenoid or camshaft position sensor, and inspecting wiring harnesses and connectors for any damage.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Bmw p0012 OBD Code
The engine may exhibit rough idling or poor acceleration with BMW fault code P0012.
- Symptoms for BMW OBD code P0012 may include: Engine Light ON.
- Rough idling.
- Lack of power during acceleration.
- Engine stalling.
- Poor fuel economy.
- Timing chain noise.
Causes of the Bmw p0012 OBD Code
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Fault code P0012 on a BMW typically indicates an issue with the camshaft position timing overretarded.
- P0012 can be caused by low or dirty engine oil.
- A faulty VANOS solenoid.
- A faulty camshaft position sensor.
- A mechanical timing condition.
Fixing Bmw Error Code p0012 Step By Step
Addressing BMW P0012 involves inspecting and potentially replacing the camshaft position sensor or adjusting the timing.
- To fix BMW OBDII code P0012, first, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, check the engine oil level and quality, ensuring it meets BMW specifications.
- Then, inspect the camshaft position sensor and the VANOS system for any faults or malfunctions.
- If no issues are found with the wiring, connectors, oil, camshaft position sensor, or VANOS system, consider replacing the camshaft position sensor or performing a VANOS system repair.
- Finally, clear the fault codes and test drive the vehicle to verify that the P0012 code does not return.
Cost Of Fixing Bmw p0012 Fault Code
Diagnosing and repairing BMW P0012 involves inspecting and potentially replacing the camshaft position sensor.
The cost to diagnose and fix a BMW OBD code P0012 typically ranges from $75 to $150 per hour for labor rates.
With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the repair.
Details of the Bmw p0012 OBD Code
BMW P0012 code indicates a camshaft position timing overretarded condition in bank 1.
OBD code P0012 for BMW indicates a A Camshaft Position Timing OverRetarded Bank 1. This means that the ECM has detected that the camshaft timing for bank 1 is too retarded.
The component that triggers this fault code is typically the camshaft position sensor, which monitors the position of the camshaft in relation to the crankshaft.
The signal or system involved in this fault code is the camshaft timing system, which includes components such as the camshaft phaser, timing chain, and camshaft position sensor.
Mechanic’s Tech Notes
Detailed information on BMW P0012 code, including symptoms, causes, and diagnostic steps for efficient troubleshooting.
To diagnose BMW OBDII code P0012, start by checking the engine oil level and condition.
Inspect the camshaft position sensor and the VANOS system for any faults.
Use a scan tool to monitor camshaft timing values and compare them to specifications.
Check for oil sludge buildup in the VANOS system, which can cause timing issues.
Verify proper oil pressure to the VANOS system using a mechanical oil pressure gauge.
If all checks out, consider inspecting the VANOS solenoids for proper operation.
Address any issues found during these checks to resolve the P0012 fault code.
FAQ
Common causes of OBD code P0012 in a BMW: Low/dirty engine oil, faulty VANOS solenoid, faulty camshaft position sensor, mechanical timing issue. Inspect wiring harness/connectors for damage.
Diagnose and fix OBD code P0012 in your BMW by checking for low/dirty engine oil, faulty VANOS solenoid, camshaft position sensor, or mechanical timing issues. Inspect wiring and connectors.
Address the issue promptly. Driving with code P0012 can lead to engine damage. Check engine oil level and condition first. Inspect VANOS solenoid and camshaft sensor.

Wrap Up
If your BMW is displaying OBD code P0012, you may experience rough idling, poor acceleration, or decreased fuel efficiency.
This code typically indicates an issue with the camshaft position timing overretarded.
Possible causes include a faulty camshaft position sensor, timing chain wear, or oil flow issues to the variable valve timing system.
To address BMW OBD code P0012, start by inspecting the camshaft position sensor and its wiring harness for any damage or loose connections.
Check the timing chain for wear and ensure proper oil flow to the variable valve timing components.
Consider replacing the cam