BMW DTC P2255 – O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 1)
DTC P2255 meaning on BMW
DTC P2255 on a BMW indicates an issue with the O2 Sensor Negative Current Control Circuit for Bank 2 Sensor 1. This fault code specifically points to a low voltage condition in the circuit.
BMW DTC P2255 symptoms
Symptoms of DTC P2255 on a BMW may include poor fuel economy, rough idling, engine misfires, and potentially an illuminated Check Engine Light on the dashboard.
BMW DTC P2255 causes
The causes of DTC P2255 on a BMW can vary, but common reasons include a faulty O2 sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).
BMW DTC P2255 seriousness
While DTC P2255 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and potential long-term engine damage if left unresolved. It is recommended to address this fault code promptly.
How to diagnose DTC P2255 on BMW
To diagnose DTC P2255 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a thorough inspection of the O2 sensor, wiring, and related components to identify the root cause of the issue.
How to fix DTC P2255 on BMW
Fixing DTC P2255 on a BMW may involve replacing the faulty O2 sensor, repairing damaged wiring or connectors, or addressing any issues with the engine control module. It is recommended to follow manufacturer guidelines and use quality replacement parts.
How to erase DTC P2255 on BMW
Once the underlying issue causing DTC P2255 on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. This will reset the Check Engine Light and ensure that the repair was successful.