P1141 – Mazda DTC

Mazda DTC P1141 – HO2S Bank 1 Sensor 2 Heater Circuit Low Input

DTC P1141 meaning on Mazda

1. DTC: P1141
2. HO2S: Heated Oxygen Sensor
3. Bank 1 Sensor 2: Refers to the downstream oxygen sensor on the bank 1 side of the engine
4. Heater Circuit Low Input: Indicates that the power input to the heater circuit of the oxygen sensor is lower than expected

Mazda DTC P1141 symptoms

• Check Engine Light illuminated
• Poor fuel economy
• Engine may run rough or stall
• Increased emissions

Mazda DTC P1141 causes

• Faulty oxygen sensor heater
• Wiring or connector issues in the heater circuit
• Blown fuse related to the oxygen sensor heater circuit
• PCM (Powertrain Control Module) fault

Mazda DTC P1141 seriousness

The DTC P1141 code should not be ignored as it can lead to poor engine performance, reduced fuel efficiency, and increased emissions. It is recommended to address this issue promptly to prevent further damage to the vehicle.

How to diagnose DTC P1141 on Mazda

1. Check the oxygen sensor heater circuit for continuity and resistance
2. Inspect the wiring and connectors for any damage or corrosion
3. Test the fuse related to the oxygen sensor heater circuit
4. Use a scan tool to monitor the oxygen sensor data and heater operation

How to fix DTC P1141 on Mazda

1. Replace the faulty oxygen sensor if the heater is defective
2. Repair or replace any damaged wiring or connectors in the heater circuit
3. Replace the blown fuse if necessary
4. If the issue persists, consider checking the PCM for faults or reprogramming

How to erase DTC P1141 on Mazda

To clear the DTC P1141 code, you can use an OBD-II scanner to reset the codes. After fixing the underlying issue, clearing the code will turn off the Check Engine Light. Make sure the problem is resolved before erasing the code.

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