What does code P0188 mean?
High signal detected from fuel temperature sensor B indicating fuel hotter than actual
OBD-II Code
P0188 — Fuel Temperature Sensor B Circuit High Input
High signal detected from fuel temperature sensor B indicating fuel hotter than actual
Common symptoms
- Lean mixture
- hesitation
- intermittent fault
Possible causes
- Signal shorted to voltage
- damaged sensor
- fuel rail overheating
Initial recommendation
Inspect harness, measure resistance and check fuel rail temperature.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0188 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more codes