P043C

DTC P043C, sometimes indicated as P043C00 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 auxiliary emissions system causing catalyst temperature sensor circuit low (bank 2 sensor 2).

This code is set when the PCM detects a low input voltage from the catalytic converter temperature sensor. This could be caused by a faulty sensor, a wiring issue, or a problem with the PCM.
If the code is caused by a faulty sensor, the sensor will need to be replaced. If the code is caused by a wiring issue, the wiring will need to be repaired. If the code is caused by a problem with the PCM, the PCM will need to be replaced.

• P043C: Temperature Sensor Circuit Low (Bank 2 Sensor 2)
• P043C: Catalyst Temperature Sensor Circuit Low (Bank 2 Sensor 2)
• P043C: Catalyst Temperature Sensor Circuit Low Bank 2 Sensor 2
• P043C: Catalytic converter temperature sensor 2, bank 2 – circuit low
• P043C 00: Catalytic converter temperature sensor 2, bank 2 - circuit low