Faulty Crankshaft Position Sensor
This code indicates a problem with the crankshaft position sensor signal.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The crankshaft position sensor tracks the position of the crankshaft, helping the engine control unit manage ignition timing and fuel injection. When it doesn't work right, the engine may misfire or stall because it doesn't know when to fire the cylinders.
What the computer is actually seeing
The engine control unit (ECU) expects a steady signal from the crankshaft position sensor, usually a square wave. A signal that's irregular or absent (0V instead of 1V-5V depending on the design) will trigger this code.
What a healthy reading looks like
Crankshaft sensor voltage should be between 1V to 5V while the engine is running, showing a clear signal of crankshaft position.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check for visible damage to wiring and connectors leading to the crankshaft position sensor. Repair any issues found.
- 2Using a multimeter, check the voltage output of the crankshaft position sensor with the engine running. It should be between 1V to 5V, indicating a proper signal.
- 3If the signal is missing or faulty, replace the crankshaft position sensor and retest. If the code persists, inspect the wiring harness for shorts or opens.
- 4Check the engine timing. If timing is off, it may cause sensor readings to be incorrect. Adjust as necessary.
Common causes
- Faulty crankshaft position sensor
- Damaged wiring or connectors
- Engine timing issues
- Metal debris on sensor
- Faulty engine control module (ECM)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
While the vehicle might drive, it can experience stalling or misfires, so it's best to fix it soon.
Will this code come back after clearing it?
If the underlying issue isn't resolved, the code will likely return after a short drive cycle.
Why does this code pair with SPN 0341?
SPN 0341 indicates an out-of-range signal from the crankshaft position sensor, which is often a direct consequence of the same sensor issue.
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