Audi A4 Wont Start — Camshaft Position Sensor Failure
Audi A4 cranking but not starting stores P0340/P0345 camshaft position sensor codes. The sensor fails causing the ECU to lose cam timing reference. CMP sensor replacement costs £80-200. Always check for chain stretch if cam sensor codes appear on early B6.
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No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Audi A4 2001 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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