What does code P1449 mean?

Q: What does code P1449 mean?

Catalyst Temperature Sensor 2 Circuit Open Short To B+. P1449 on Volkswagen vehicles indicates that the engine control module has detected an open circuit or a short to battery voltage on the signal circuit of catalyst temperature sensor 2, which is the downstream exhaust gas temperature sensor. The computer expects a voltage within a specific range that varies with exhaust temperature, and it saw a value outside that range for a calibrated time, triggering the fault.

DTC codes / Volkswagen codes / P1449

P1449 · VolkswagenCatalyst Temperature Sensor 2 Circuit Open Short To B+

P1449 on Volkswagen vehicles indicates that the engine control module has detected an open circuit or a short to battery voltage on the signal circuit of catalyst temperature sensor 2, which is the downstream exhaust gas temperature sensor. The computer expects a voltage within a specific range that varies with exhaust temperature, and it saw a value outside that range for a calibrated time, triggering the fault.

SystemPowertrain

Code typeVolkswagen specific

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

Guidance is general and written for Volkswagen vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.