Error Code Guide
P0698
Low Severity
Sensor Reference Voltage - Circuit Low
Don't ignore this warning! Complete diagnostic guide to understand, diagnose, and fix this trouble code.
Step-by-step guide
Repair cost estimates
What does P0698 mean?
The P0698 diagnostic trouble code indicates: Sensor Reference Voltage - Circuit Low. This is a powertrain-related code that affects your vehicle's engine or transmission performance. When this code is triggered, the Engine Control Module (ECM) has detected a fault in the related system or component.
Common SymptomsWatch out for these warning signs
- Check Engine Light (CEL) illuminated
- Malfunction Indicator Lamp (MIL) on
- Multiple warning lights
- Vehicle may not start
- Erratic electrical behavior
- Communication errors
Possible CausesDiagnose from most to least common
- 1Faulty sensor
- 2Damaged sensor wiring or connector
- 3Corroded electrical connections
- 4Sensor out of calibration
- 5Open or short in wiring harness
- 6Poor electrical connection
- 7Damaged wiring insulation
- 8Faulty ground connection