P0340 — Camshaft Position Sensor Circuit Fault

P0340 is set when the engine control module cannot interpret the camshaft position sensor signal on the primary cam (or the single cam on engines with one sensor). The signal might be missing entirely, out of phase with the crankshaft signal, or showing electrical noise. Because the ECM uses cam position to time fuel injection and ignition, a P0340 will typically cause a hard start, a no-start, or a stall.

Severity: high powertrain Safe to drive (short term)

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2010-2014

2015-2019

2020-2024