What does code P1141 mean?

Q: What does code P1141 mean?

HO2S Bank 1 Sensor 2 Heater Circuit Low Input. P1141 on Mazda vehicles means the powertrain control module (PCM) has detected a low input voltage on the heater circuit of the downstream heated oxygen sensor (HO2S) in bank 1, sensor 2. The PCM expects to see battery voltage on the heater control circuit when the heater is commanded on, and a low reading tells it the circuit is shorted to ground or the heater element has failed.

DTC codes / Mazda codes / P1141

P1141 · MazdaHO2S Bank 1 Sensor 2 Heater Circuit Low Input

P1141 on Mazda vehicles means the powertrain control module (PCM) has detected a low input voltage on the heater circuit of the downstream heated oxygen sensor (HO2S) in bank 1, sensor 2. The PCM expects to see battery voltage on the heater control circuit when the heater is commanded on, and a low reading tells it the circuit is shorted to ground or the heater element has failed.

SystemPowertrain

Code typeMazda specific

SeverityLow

Fix difficultyIntermediate

AreaFuel and air metering

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