Powertrain
generic / SAE
P0189
Fuel Temperature Sensor B Circuit Intermittent
The ECU detects intermittent dropouts on the fuel temperature sensor B circuit. Loose connector, chafed wiring or sensor failing under thermal load.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 89
Possible causes
- Connector loose or corroded high
- Wiring chafed medium
- Connector with intermittent contact under vibration low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 40–250 €
- Estimated time: 0.5–2 h
- Component: fuel temperature sensor b
- Component: sensor connector
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012