P1153 – BMW DTC

BMW DTC P1153 – O2 Sensor Heater Circuit High Voltage (Bank 2 Sensor 1)

DTC P1153 meaning on BMW

DTC P1153 on a BMW indicates an issue with the O2 sensor heater circuit for Bank 2 Sensor 1. This fault code specifically points to a high voltage condition in the O2 sensor heater circuit, which is responsible for ensuring the oxygen sensor reaches operating temperature quickly for optimal performance.

BMW DTC P1153 symptoms

Symptoms of DTC P1153 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring
• Reduced engine performance

BMW DTC P1153 causes

Common causes of DTC P1153 on a BMW include:

• Faulty O2 sensor heater circuit
• Short circuit or open circuit in the O2 sensor heater wiring
• Defective O2 sensor heater relay
• Issues with the engine control module (ECM)

BMW DTC P1153 seriousness

While DTC P1153 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and potentially harm the engine over time if left unresolved. It is recommended to address this fault code promptly to prevent further complications.

How to diagnose DTC P1153 on BMW

To diagnose DTC P1153 on a BMW, you can perform the following steps:

1. Use an OBD-II scanner to retrieve the fault code and verify the specific details.
2. Inspect the wiring and connectors related to Bank 2 Sensor 1 O2 sensor heater circuit for any visible damage or corrosion.
3. Check the O2 sensor heater relay for proper operation.
4. Test the O2 sensor heater circuit for continuity and resistance.

How to fix DTC P1153 on BMW

To fix DTC P1153 on a BMW, you can follow these steps:

1. Replace the faulty O2 sensor if the heater circuit is determined to be the issue.
2. Repair any damaged wiring or connectors in the O2 sensor heater circuit.
3. Replace the O2 sensor heater relay if found to be defective.
4. If the ECM is suspected to be the problem, consult a professional for further diagnosis and repair.

How to erase DTC P1153 on BMW

To erase DTC P1153 on a BMW, you can:

1. Use an OBD-II scanner to clear the fault code after the underlying issue has been resolved.
2. Ensure the repair has been completed successfully before clearing the code to prevent it from reoccurring.

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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