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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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Repairs0Labor314Torque3680Fluid5DTC1608Battery1Maintenance0Recalls4
P0698high severityPowertrain

Sensor Reference Voltage C Circuit Low

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

What this code means

The sensor reference voltage circuit C is reading below the expected 5 volts. This is usually caused by a short to ground or an overloaded reference.

Symptoms

  • Check engine light on
  • Multiple sensor faults
  • Rough running engine

Common causes

  • Short to ground in reference wire
  • Shorted sensor
  • Damaged connector
  • Faulty PCM

Diagnostic steps

  1. Confirm low reference voltage with meter
  2. Inspect wiring for shorts to ground
  3. Isolate sensors to find the fault
  4. Repair wiring or replace PCM
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