Engine Position Sensor Fault
The engine position sensor is malfunctioning or not providing a valid 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 position sensor tells the computer where the engine crankshaft is located. If it's not working, the computer can't adjust fuel or timing properly, which can lead to poor performance or stalling.
What the computer is actually seeing
The computer looks for a voltage signal from the engine position sensor, typically between 0.5V and 4.5V depending on engine position. If the signal is out of this range or missing, it'll trigger this fault code.
What a healthy reading looks like
Voltage from the engine position sensor should be between 0.5V (at start) and 4.5V (at full throttle), with specific patterns depending on engine RPM.
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. Inspect wiring and connectors of the engine position sensor for damage or corrosion. Clear code and test drive the vehicle. If code reappears, proceed to step 2.
- 22. Measure the voltage output at the engine position sensor connector with the ignition on, engine off. Expected: 0.5V to 4.5V. If the signal is out of range, replace the sensor. If within range, proceed to step 3.
- 33. Check the engine timing to ensure it is correct. Inspect for timing belt/chain wear or failure. If timing is off, repair as needed.
Common causes
- Failed engine position sensor
- Wiring issues or connector problems
- Mechanical failure such as timing chain/belt issues
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended, as this issue can lead to poor engine performance and potential stalling.
Will this code come back after clearing it?
If the underlying issue isn't fixed, it will likely return after driving for a short period.
Why do I see this code with another fault?
Often, if the engine position sensor is faulty, it can affect other related systems, leading to multiple fault codes.
Working a real vehicle right now?
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