TorqueMech OBD Code Guide
P0188 - Fuel Temperature Sensor B Circuit High Input
The fuel temperature sensor B signal is higher than expected.
Code Overview
The fuel temperature sensor B signal is higher than expected.
Common Causes
- Failed fuel temperature sensor B
- Damaged wiring or connector at the fuel temperature sensor B
- Open or short in the circuit
Diagnostic Steps
- Inspect the fuel temperature sensor B connector and wiring
- Verify reference voltage, ground, and signal
- Compare scan data to a realistic known-good reading
Likely Repairs & Cost Guides
Use test results to confirm the fault before pricing the repair.
Open EstimatorRelated OBD Codes
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Next Steps
Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.