OBD-II Generic Error Code P0374: How to Fix It

Q: What does error code P0374 mean?

P0374 indicates that the engine computer (ECM) has detected no pulses from the high-resolution timing reference sensor, which is typically the crankshaft or camshaft position sensor. This disrupts engine timing and may prevent the engine from starting or running properly.

Q: Can I drive with a P0374 code?

It is not recommended. The engine may stall, run poorly, or fail to start. Continuing to drive could cause further engine damage or leave you stranded.

Q: What are common causes of P0374?

Common causes include a faulty crankshaft or camshaft position sensor, damaged wiring or connectors, a broken timing belt/chain, or an ECM problem.

Q: How do I fix error code P0374?

Fix steps include: 1) Check for related codes. 2) Inspect sensor wiring and connectors. 3) Test sensor resistance and voltage. 4) Inspect timing components. 5) Replace faulty sensor if needed. 6) Clear codes and test drive.

Q: Is P0374 the same as P0335?

No. P0335 refers to a crankshaft position sensor circuit malfunction (no signal), while P0374 specifically indicates no high-resolution timing pulses. However, both are related to timing reference and may occur together.

Abstract

Error code P0374 indicates that the Engine Control Module (ECM) has detected no pulses from the high-resolution timing reference signal. This signal, typically from a crankshaft or camshaft position sensor, is essential for engine timing and fuel injection synchronization. Without it, the engine may start but run poorly, or fail to start altogether.