Engine Position Sensor Performance
The engine position sensor is sending incorrect signals to the ECU.
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 tracks the position of the engine crankshaft. If it sends a bad signal, it can confuse the engine control unit (ECU), potentially causing performance problems or stalling.
What the computer is actually seeing
The ECU expects a smooth voltage signal that indicates the crankshaft position consistently within a range of 0.5 to 4.5 volts. If the signal fluctuates too much or is outside this range, the ECU registers a fault.
What a healthy reading looks like
Crankshaft position sensor voltage: 0.5V to 4.5V, with a smoothly changing frequency based on RPM. Sensor should provide a consistent output when engine is running.
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 the engine position sensor's wiring harness for damage or loose connections. Repair if necessary.
- 2Test the voltage output of the engine position sensor with a multimeter; it should be within 0.5V to 4.5V at idle.
- 3If the voltage is out of range, replace the engine position sensor and retest.
- 4If the sensor is functional, check the ECU for stored DTCs that might indicate wiring issues or ECU faults.
Common causes
- Faulty engine position sensor
- Wiring issues (shorts, opens, corrosion)
- Faulty ECU
- Timing belt/chain issues affecting sensor operation
Typical repair cost
$$ (200-600)
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's better to fix it soon; drivability could be affected.
Will the code come back after resetting?
If the underlying issue isn't fixed, it will likely return.
Why does this code pair with other SPNs?
They often indicate related issues, often with the sensor or its circuit.
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