P1122moderate severityPowertrain
TP Sensor Circuit Intermittent Low Voltage
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The throttle position sensor signal briefly dropped too low. Often caused by a bad connection or failing sensor.
Symptoms
- Check engine light on
- Intermittent hesitation
- Erratic idle
Common causes
- Loose or corroded connector
- Faulty TP sensor
- Chafed or broken wiring
- Bad PCM ground
Diagnostic steps
- Scan and monitor TP sensor voltage
- Wiggle-test connector and harness
- Check reference and ground circuits
- Replace TP sensor if signal drops out
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