Engine Output Speed Sensor
Indicates an issue with the engine output speed 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 engine output speed sensor measures how fast the engine is turning and sends that information to the computer. If it fails, the computer can't tell if the engine is running properly.
What the computer is actually seeing
The computer expects to receive a consistent frequency signal indicating the engine's RPM, typically in the range of 400-6000 RPM. If the signal deviates or is absent, it triggers the fault code.
What a healthy reading looks like
Expected frequencies should match engine RPM, with a minimum of 400 RPM under idle conditions and a maximum near 6000 RPM during full throttle.
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.
- 11. Check the wiring harness and connectors for damage or corrosion; repair as needed.
- 22. Use a multimeter to test the engine output speed sensor; verify that it produces a voltage signal between 0.5V to 5V while the engine runs.
- 33. If the voltage is outside of this range, replace the speed sensor and retest.
- 44. If the sensor is working, check for faults in the ECM by scanning for additional codes.
- 55. Inspect the crankshaft and camshaft sensors for any faults that could affect the engine speed signal; replace if necessary.
Common causes
- Faulty engine output speed sensor
- Damaged wiring or connectors
- Engine control module (ECM) issues
- Faulty crankshaft or camshaft position sensors
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It can be safe to drive, but expect potential drivability issues like stalling or rough idling.
Will the code likely come back after repairs?
If the underlying issue is resolved, the code shouldn't return; re-check connections and sensor function.
Does this code relate to other drivability issues?
Yes, it can impact turbo performance and overall engine efficiency.
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