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2022 CHEVROLET BOLT EUV
65 kWh Single Motor FWD•FWD•AUTOMATIC•ev
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor314Torque3680Fluid5DTC1306Battery1Maintenance0Recalls4
P0641moderate severityPowertrain

Sensor Reference Voltage A Circuit/Open

on 2022 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD

What this code means

The PCM detected a problem with the 5-volt reference supply on circuit A. Multiple sensors sharing this reference may read incorrectly.

Symptoms

  • Multiple sensor codes
  • Check engine light on
  • Erratic sensor readings

Common causes

  • Shorted sensor on reference circuit
  • Damaged reference wiring
  • Corroded connector
  • Faulty PCM

Diagnostic steps

  1. Scan for multiple sensor codes
  2. Measure 5V reference at affected sensors
  3. Disconnect sensors to isolate short
  4. Repair wiring or replace PCM
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