P1189 – Audi DTC

Audi DTC P1189 – Linear 02 Sensor / Compens. Resistor Short to B+

DTC P1189 meaning on Audi

The Diagnostic Trouble Code (DTC) P1189 for Audi indicates a Linear O2 Sensor / Compens. Resistor Short to B+. This means that there is a short circuit between the oxygen sensor and the compensating resistor, causing a disruption in the signal feedback loop.

Audi DTC P1189 symptoms

Symptoms of DTC P1189 on an Audi may include:

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

Audi DTC P1189 causes

Common causes of DTC P1189 on an Audi include:

• Short circuit between the oxygen sensor and compensating resistor
• Wiring harness issues
• Faulty oxygen sensor
• Compensating resistor malfunction

Audi DTC P1189 seriousness

The seriousness of DTC P1189 on an Audi lies in the potential impact on engine performance and emissions. Ignoring this fault can lead to decreased fuel efficiency, engine misfires, and potential damage to the catalytic converter over time.

How to diagnose DTC P1189 on Audi

To diagnose DTC P1189 on an Audi, follow these steps:

1. Use an OBD-II scanner to retrieve the fault code
2. Inspect the wiring harness for any visible damage or shorts
3. Check the oxygen sensor and compensating resistor for proper operation
4. Perform a voltage test to identify the location of the short circuit

How to fix DTC P1189 on Audi

To fix DTC P1189 on an Audi, consider the following steps:

1. Repair any damaged wiring or replace the wiring harness if necessary
2. Replace the faulty oxygen sensor or compensating resistor
3. Clear the fault code using an OBD-II scanner after making the repairs
4. Perform a test drive to ensure the issue has been resolved

How to erase DTC P1189 on Audi

To erase DTC P1189 on an Audi, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port
2. Select the option to clear fault codes from the scanner menu
3. Wait for the scanner to communicate with the vehicle’s ECU and clear the DTC
4. Verify that the DTC P1189 has been successfully erased by checking for any remaining fault codes

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