P0185

DTC P0185, sometimes indicated as P018500 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 malfunction.

There are several possible causes for this DTC, including a bad fuel temperature sensor, a wiring problem, or a problem with the engine control module (ECM).
If you suspect a bad fuel temperature sensor, you can test it by disconnecting the sensor and checking the resistance between the two terminals. The resistance should be around 10 ohms at room temperature. If the resistance is outside of this range, the sensor is likely bad.
If you suspect a wiring problem, you can check for voltage at the sensor connector. There should be 5 volts present when the ignition is on.
If you suspect a problem with the ECM, you can check the engine codes to see if there is a problem with the ECM.

• P0185: Fuel Temperature Sensor B Circuit Malfunction
• P0185: Fuel Temperature Sensor "B" Circuit
• P0185: Fuel temperature sensor B – circuit malfunction
• P0185 00: Damage to the circuit of the fuel temperature sensor B
• P0185 00: Fuel temperature sensor B - circuit malfunction