BMW DTC P2248 – O2 Sensor Reference Voltage Performance (Bank 2 Sensor 1)
DTC P2248 meaning on BMW
DTC P2248 on a BMW indicates a problem with the O2 Sensor Reference Voltage Performance for Bank 2 Sensor 1. This means that the engine control module (ECM) has detected that the reference voltage being supplied to the oxygen sensor located in bank 2, sensor 1 is not within the expected range.
BMW DTC P2248 symptoms
Symptoms of DTC P2248 on a BMW may include poor engine performance, decreased fuel efficiency, rough idling, and an illuminated check engine light on the dashboard.
BMW DTC P2248 causes
The common causes of DTC P2248 on a BMW include a faulty oxygen sensor, damaged wiring or connectors in the oxygen sensor circuit, a malfunctioning ECM, or a problem with the power supply to the sensor.
BMW DTC P2248 seriousness
While DTC P2248 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and increased emissions. Ignoring this fault code can potentially cause further damage to the vehicle over time.
How to diagnose DTC P2248 on BMW
To diagnose DTC P2248 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and perform a thorough inspection of the oxygen sensor, wiring, and connectors in the sensor circuit. Testing the reference voltage supplied to the sensor and checking for any signs of damage or corrosion can help pinpoint the root cause of the issue.
How to fix DTC P2248 on BMW
Fixing DTC P2248 on a BMW may involve replacing the faulty oxygen sensor, repairing any damaged wiring or connectors, or addressing any issues with the power supply to the sensor. Once the underlying cause has been identified and resolved, clearing the fault code and resetting the ECM can help ensure that the issue has been successfully addressed.
How to erase DTC P2248 on BMW
To erase DTC P2248 on a BMW, a diagnostic scanner can be used to clear the fault code from the ECM’s memory. After the repair has been completed and the issue resolved, clearing the fault code will turn off the check engine light and ensure that the vehicle’s onboard computer no longer detects the fault.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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