P042B

DTC P042B, sometimes indicated as P042B00 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 range/performance (bank 1 sensor 2).

The DTC P042B Catalyst Temperature Sensor Circuit Range/Performance is a generic code that is set when the Engine Control Module (ECM) detects a problem with the catalyst temperature sensor.
Possible causes of this code include a faulty catalyst temperature sensor, a wiring problem, or a problem with the ECM.
If this code is set, the best course of action is to have the vehicle inspected by a qualified technician to determine the cause of the problem.

• P042B: Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 2)
• P042B: Catalyst Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 2)
• P042B: Catalyst Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
• P042B: Catalytic converter temperature sensor 2, bank 1 – circuit range/performance
• P042B 00: Catalytic converter temperature sensor 2, bank 1 - circuit range/performance