P019C – BMW DTC

BMW DTC P019C – O2 Sensor Delayed Response – Rich to Lean (Bank 2 Sensor 3)

DTC P019C meaning on BMW

The DTC P019C code on a BMW indicates that there is a delayed response from the oxygen sensor located in Bank 2 Sensor 3, transitioning from a rich to lean air-fuel mixture. This means that the sensor is not providing the expected feedback to the engine control module in a timely manner, which can affect the engine’s performance and emissions.

BMW DTC P019C symptoms

Symptoms of a DTC P019C code on a BMW may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring
• Reduced engine power

BMW DTC P019C causes

Common causes of a DTC P019C code on a BMW include:

• Faulty oxygen sensor (Bank 2 Sensor 3)
• Wiring or connector issues in the oxygen sensor circuit
• Exhaust leaks near the oxygen sensor
• Engine running too rich or too lean

BMW DTC P019C seriousness

While a DTC P019C code may not cause immediate drivability issues, it can lead to decreased fuel efficiency and increased emissions. Ignoring this code can potentially cause further damage to the engine or emissions control system over time.

How to diagnose DTC P019C on BMW

To diagnose a DTC P019C on a BMW, you can perform the following steps:

1. Use an OBD-II scanner to retrieve the specific fault code and freeze frame data
2. Inspect the wiring and connectors related to Bank 2 Sensor 3
3. Check for exhaust leaks near the oxygen sensor
4. Perform a visual inspection of the oxygen sensor for any physical damage

How to fix DTC P019C on BMW

To fix a DTC P019C on a BMW, you may need to:

1. Replace the oxygen sensor in Bank 2 Sensor 3
2. Repair any damaged wiring or connectors in the oxygen sensor circuit
3. Address any exhaust leaks near the sensor
4. Ensure the engine is running at the correct air-fuel ratio

How to erase DTC P019C on BMW

To erase a DTC P019C code on a BMW, you can:

1. Use an OBD-II scanner to clear the code
2. Alternatively, disconnect the battery for a few minutes to reset the engine control module
3. After clearing the code, monitor the vehicle for any reoccurrence of the DTC

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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