Timing Chain Fault Codes for BMW

P0012 – “A” Camshaft Position – Timing Over-Retarded (Bank 1)
Description: Like Ford, this code indicates the camshaft timing is over-retarded, possibly due to timing chain problems.

P0015 – “B” Camshaft Position – Timing Over-Retarded (Bank 1)
Description: Indicates that the “B” camshaft position timing is over-retarded, which can be linked to a timing chain issue.

P0016 – Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor A)
Description: This code signifies a misalignment between the crankshaft and camshaft, potentially due to a timing chain problem.

P0017 – Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor B)
Description: Indicates a timing misalignment, which could be due to a worn or stretched timing chain.

P0018 – Crankshaft Position – Camshaft Position Correlation (Bank 2 Sensor A)
Description: Points to a correlation issue between the crankshaft and camshaft on the second bank, possibly due to timing chain issues.

P0019 – Crankshaft Position – Camshaft Position Correlation (Bank 2 Sensor B)
Description: Indicates a misalignment that might be caused by a faulty timing chain.

P0021 – “A” Camshaft Position – Timing Over-Advanced or System Performance (Bank 2)
Description: Over-advanced camshaft timing, often related to timing chain problems.

P0022 – “A” Camshaft Position – Timing Over-Retarded (Bank 2)
Description: Camshaft timing is over-retarded, which could be caused by a timing chain issue.

P054B – Cold Start “B” Camshaft Position Timing Over-Retarded (Bank 1)
Description: Specific to BMW, this code indicates a cold start issue with camshaft timing, possibly linked to the timing chain.

P054C – Cold Start “B” Camshaft Position Timing Over-Retarded (Bank 2)
Description: Similar to P054B but for Bank 2, indicating a potential timing chain issue affecting camshaft timing during cold starts.

These error codes are common indicators of timing chain problems in Ford and BMW vehicles. If you encounter any of these codes, it is advisable to have your vehicle inspected by a professional technician to diagnose and address the issue promptly.

BMW Models that have suffered from Timing Chain Issues:

Several BMW models sold in the UK over the past 20 years have been known to experience timing chain problems. Below is a list of these models, along with specific engine details where applicable:

BMW 1 Series

1. BMW 116i, 118i, 120i (N43 Engine, 2007-2011)
   • Issues with timing chain tensioners and guides.
2. BMW 118d, 120d (N47 Engine, 2007-2015)
   • Known for timing chain failures, particularly with the N47 engine.

BMW 2 Series

3. BMW 218d, 220d (N47 Engine, 2014-2017)
   • Timing chain problems are similar to those found in the 1 Series with the N47 engine.

BMW 3 Series

4. BMW 316i, 318i, 320i (N43 Engine, 2007-2013)
   • Timing chain tensioner and guide issues.
5. BMW 318d, 320d (N47 Engine, 2007-2015)
   • Timing chain failures are common, particularly in earlier models.
6. BMW 320i (N20 Engine, 2011-2017)
   • Reports of timing chain issues, especially in high-mileage vehicles.

BMW 4 Series

7. BMW 420d (N47 Engine, 2013-2017)
   • Known timing chain problems with the N47 engine.

BMW 5 Series

8. BMW 518d, 520d (N47 Engine, 2007-2015)
   • Timing chain failures often lead to severe engine damage.
9. BMW 520i (N20 Engine, 2011-2017)
   • Issues with timing chains, especially in higher mileage cars.

BMW 6 Series

10. BMW 640d (N57 Engine, 2011-2018)
    • Timing chain problems were reported, although less frequent than in the N47 engine.

BMW X1

11. BMW X1 18d, 20d (N47 Engine, 2009-2015)
    • Common timing chain issues, particularly in earlier models.

BMW X3

12. BMW X3 18d, 20d (N47 Engine, 2010-2017)
    • It is known for timing chain failures similar to other models with the N47 engine.

BMW X5

13. BMW X5 25d, 30d (N57 Engine, 2010-2018)
    • Timing chain issues, although less frequent compared to the N47 engine.

BMW X6

14. BMW X6 30d (N57 Engine, 2008-2019)
    • Some reports of timing chain problems.

BMW 7 Series

15. BMW 730d (N57 Engine, 2008-2015)
    • It is known for timing chain issues, though less common than with the N47 engine.

BMW Z4

16. BMW Z4 20i, 28i (N20 Engine, 2011-2016)
    • Timing chain problems, especially in higher mileage vehicles.

BMW Mini (Owned by BMW, known for timing chain issues)

17. Mini Cooper S (N14 Engine, 2006-2010)
    • Timing chain tensioner failures and chain stretching.
18. Mini Cooper D (N47 Engine, 2010-2014)
    • Timing chain problems are similar to BMW models with the N47 engine.

These BMW models have reported various timing chain problems, ranging from chain stretching to complete failure. If you own one of these vehicles, you must be aware of the symptoms of timing chain issues, such as unusual engine noises, loss of power, or check engine lights. Regular maintenance and timely inspections can help catch potential problems early and prevent severe engine damage.