BMW DTC P3019 – O2 Sensor Lambda Controller Value Above Threshold due to Open Pumping Current Circuit (Bank 2 Sensor 1)
DTC P3019 meaning on BMW
DTC P3019 on a BMW indicates that the O2 Sensor Lambda Controller Value is above the threshold due to an open pumping current circuit in Bank 2 Sensor 1. This means that the oxygen sensor is not functioning properly, leading to incorrect air-fuel mixture readings.
BMW DTC P3019 symptoms
Symptoms of DTC P3019 in a BMW may include poor fuel economy, rough idling, engine misfires, hesitation during acceleration, and an illuminated check engine light on the dashboard.
BMW DTC P3019 causes
The main causes of DTC P3019 in a BMW are typically a faulty oxygen sensor, damaged wiring or connectors in the oxygen sensor circuit, or issues with the engine control module (ECM).
BMW DTC P3019 seriousness
While DTC P3019 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and potentially cause long-term damage to the engine if left unresolved. It is important to address this issue promptly.
How to diagnose DTC P3019 on BMW
To diagnose DTC P3019 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes and then perform a visual inspection of the oxygen sensor and its wiring. They may also conduct tests to check the sensor’s functionality and the ECM’s communication with it.
How to fix DTC P3019 on BMW
Fixing DTC P3019 on a BMW usually involves replacing the faulty oxygen sensor, repairing any damaged wiring or connectors, or addressing any issues with the ECM. Once the root cause is identified and resolved, the fault codes can be cleared.
How to erase DTC P3019 on BMW
To erase DTC P3019 on a BMW, the fault codes can be cleared using a diagnostic scanner. After the underlying issue has been fixed and the repairs have been made, the codes can be reset to turn off the check engine light and ensure that the problem has been resolved.
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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