Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
The throttle position sensor signal is intermittent or erratic.
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 checks the position of the accelerator pedal to control engine power, but it's getting a quirky signal that keeps changing unpredictably.
What the computer is actually seeing
The Engine Control Module (ECM) sees fluctuating voltage levels from the throttle position sensor. Ideally, it should see a steady voltage between 0.5V (closed) and 4.5V (fully open), but it detects inconsistencies.
What a healthy reading looks like
Throttle position sensor voltage should be steady between 0.5V and 4.5V as the pedal is pressed; it should change smoothly without fluctuations.
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 throttle position sensor wiring for damage or corrosion.
- 2Inspect the connectors for tightness and cleanliness.
- 3Measure the voltage output of the throttle position sensor with a multimeter while moving the accelerator pedal: should be between 0.5V and 4.5V without fluctuation.
- 4If voltage is erratic, replace the throttle position sensor; if voltage is steady, check ECM for updates or faults.
Common causes
- Faulty throttle position sensor
- Wiring issues or bad connectors
- Poor electrical connections
- Excessive dirt or debris on the sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but may cause power loss or stalling, fix soon.
Will the code come back after clearing it?
It may return if the underlying issue isn't fixed.
Why is this code showing alongside other throttle position codes?
They often share similar causes, like sensor faults or wiring issues.
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 →