P0189

DTC P0189, sometimes indicated as P018900 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing fuel temperature sensor b circuit intermittent.

Possible causes of this DTC code include a defective fuel temperature sensor, a wiring issue, a loose or corroded connector, or a failed fuel pump.
The recommended solution is to first check the fuel temperature sensor for proper function. If the sensor is found to be defective, then the recommended solution is to replace it. If the sensor is found to be functioning properly, then the next step is to check the wiring and connectors for any issues. If any issues are found, then the recommended solution is to repair or replace the wiring and/or connectors. If no issues are found, then the next step is to replace the fuel pump.

• P0189: Fuel Temperature Sensor B Circuit Intermittent
• P0189: Fuel Temperature Sensor "B" Circuit Intermittent
• P0189: Fuel Temperature Sensor B CKT Intermittent
• P0189: Fuel temperature sensor B – circuit intermittent
• P0189 00: Failure in the circuit of the fuel temperature sensor B - the failure occurs periodically
• P0189 00: Fuel temperature sensor B - circuit intermittent