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2015 VOLVO XC60
3.2L I6•AWD•AUTOMATIC•gas•B6324S
1 active safety recall on this vehicle — view recalls
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Repairs0Labor492Torque2166Fluid9DTC1822Battery1Maintenance0Recalls1
P0689high severityPowertrain

ECM/PCM Power Relay Sense Circuit Low

on 2015 Volvo XC60 3.2L I6 · AWD

What this code means

The control module detected low voltage on the power relay sense circuit that monitors main relay output. This means the module isn't seeing expected voltage when the main power relay should be energized.

Symptoms

  • Hard or no start
  • Intermittent stalling
  • Warning lights on dash

Common causes

  • Faulty main power relay
  • Corroded or loose relay connector
  • Wiring open or short in sense circuit
  • Failing PCM/ECM

Diagnostic steps

  1. Check main relay connector and pins
  2. Test relay operation and coil
  3. Measure voltage on sense circuit with relay active
  4. Inspect wiring for opens or shorts to ground
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