POTENTIOMETER OR VOLTAGE SIGNAL 1 ABNORMALITY
There’s a problem with the potentiometer or a sensor signal in the vehicle.
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 computer is seeing an odd voltage from a sensor that should tell it something about the position of a part, like a throttle or pedal, but the reading is out of its normal range.
What the computer is actually seeing
The control module expects a certain voltage range based on sensor position. For example, at rest, it might see 0.5V, and at full throttle, it should see 4.5V. If it sees anything outside 0.3V or 4.8V, it sets this code.
What a healthy reading looks like
Expected voltage ranges between 0.5V to 4.5V depending on the design, specific to the sensor type.
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 wiring and connectors for damage or corrosion.
- 2Measure the voltage at the sensor. Confirm it's within the expected range (0.5V to 4.5V).
- 3If voltage is out of range, inspect the sensor or potentiometer itself for faults.
- 4If the sensor appears good, check for poor ground connections or damaged wiring between the sensor and the control module.
- 5If everything checks out but the code persists, consider the control module as a last resort.
Common causes
- Faulty potentiometer or sensor
- Damaged wiring or connectors
- Poor ground connection
- Corroded contacts
- Internal control module fault
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive my vehicle with this code?
Moderate severity means you should fix it soon; it might affect drivability or power.
Will this code come back after I clear it?
It can return if the underlying issue isn’t resolved.
Why does this code seem to pair with other similar codes?
Multiple codes can indicate a shared wiring issue or that several sensors are affected by the same problem.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →