BMW DTC P2574 – Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Low
DTC P2574 meaning on BMW
DTC P2574 on a BMW indicates a fault with the Direct Ozone Reduction Catalyst Deterioration Sensor Circuit. This fault code is triggered when the signal from the sensor falls below the expected threshold, suggesting an issue with the sensor or the circuit.
BMW DTC P2574 symptoms
Symptoms of DTC P2574 on a BMW may include poor engine performance, decreased fuel efficiency, rough idling, and potentially an illuminated check engine light on the dashboard.
BMW DTC P2574 causes
The causes of DTC P2574 on a BMW can vary, but common reasons include a faulty Direct Ozone Reduction Catalyst Deterioration Sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the engine control module.
BMW DTC P2574 seriousness
While DTC P2574 may not cause immediate drivability issues, it is important to address this fault code promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance and emissions control.
How to diagnose DTC P2574 on BMW
To diagnose DTC P2574 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a thorough inspection of the Direct Ozone Reduction Catalyst Deterioration Sensor, its wiring, and the related circuitry to identify any faults or damages.
How to fix DTC P2574 on BMW
Fixing DTC P2574 on a BMW may involve replacing the Direct Ozone Reduction Catalyst Deterioration Sensor if it is found to be faulty, repairing any damaged wiring or connectors in the sensor circuit, or addressing any issues with the engine control module that may be causing the fault code.
How to erase DTC P2574 on BMW
Once the underlying issue causing DTC P2574 on a BMW has been resolved, the fault code can be erased using a diagnostic scanner capable of clearing trouble codes. This will reset the check engine light and allow the vehicle’s onboard computer to monitor the system for any new faults.
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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