Operation CHARM: Car repair manuals for everyone.

Display Group 015 & 016




Display group 015




Display group 016

Notes on display fields 2, 3 and 4: Display groups 015 and 016 If there is a difference of more than a factor of 3 between the lowest and the highest knock sensor signal in one display group, the following malfunction is possible:
- Corrosion on the harness connector

If there are differences of more than 50% in knock sensor signal between display group 015 (cylinders 1 to 3) and display group 016 (cylinders 4 to 6), the following malfunctions are possible:
- Corrosion on the harness connector
- Open circuit
- Knock sensor faulty

If no malfunctions are found during the electrical testing of the knock sensor, the wiring and the connections, the engine should be checked for loose subassemblies or engine damage (e.g. oil burning due to faulty piston) Display groups 013 and/or 014.