Throttle Position Output Circuit/Open
What it means
P2620 means the throttle-position output signal circuit is open, so the ECM can't reliably report or relay throttle position. Electronic throttle systems often respond by limiting power to a safe limp mode.
Can I keep driving? You can usually drive, but the vehicle may drop into reduced-power (limp) mode with sluggish throttle response until it's fixed.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced engine power or limp mode
- Poor or erratic throttle response
- Hesitation on acceleration
Common causes
Most likely first
- Open or shorted wire in the throttle-position output circuitLikely
- Poor or corroded connector at the throttle body/pedal or ECMCommon
- Faulty throttle position sensorCommon
- Dirty or carbon-filled throttle bore affecting the sensorLess often
- Faulty ECMLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame, then check the throttle/pedal connector for a steady 5-volt reference and a clean ground with the key on.
- Inspect the output-signal wiring for opens, shorts, or chafing.
- Clean the throttle bore if it's carbon-fouled.
- Test the throttle position sensor and replace it if out of range.
- If the circuits and sensor are good, suspect the ECM. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2620?+
Can I just clear P2620?+
Related codes
Read & clear P2620 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.