P1133 – Audi DTC

Audi DTC P1133 – O2 Sensor Heating Circuit, Bank1+2-Sensor1 Electrical Malfunction

DTC P1133 meaning on Audi

DTC P1133 indicates an O2 Sensor Heating Circuit, Bank1+2-Sensor1 Electrical Malfunction in an Audi vehicle. This fault code specifically relates to the heating circuit of the oxygen sensor located in Bank 1 and Bank 2, Sensor 1 positions.

Audi DTC P1133 symptoms

Symptoms of DTC P1133 in an Audi may include:

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

Audi DTC P1133 causes

Common causes of DTC P1133 in an Audi include:

• Faulty oxygen sensor
• Issues with the oxygen sensor heating circuit
• Wiring or connector problems in the sensor circuit
• ECU (Engine Control Unit) malfunction

Audi DTC P1133 seriousness

While DTC P1133 may not cause immediate drivability issues, it is important to address this fault code promptly to prevent potential damage to the vehicle’s engine and emissions system.

How to diagnose DTC P1133 on Audi

To diagnose DTC P1133 on an Audi, a mechanic may perform the following steps:

1. Use an OBD-II scanner to retrieve the fault code and freeze frame data
2. Inspect the wiring and connectors related to the oxygen sensor heating circuit
3. Test the oxygen sensor and its heating element for proper functionality
4. Check the ECU for any stored codes or issues

How to fix DTC P1133 on Audi

To fix DTC P1133 on an Audi, the following steps may be taken:

1. Replace the faulty oxygen sensor if necessary
2. Repair any damaged wiring or connectors in the sensor circuit
3. Address any issues with the oxygen sensor heating element
4. If needed, diagnose and rectify any ECU malfunctions

How to erase DTC P1133 on Audi

After fixing the underlying issue causing DTC P1133 on an Audi, the fault code can be erased using an OBD-II scanner. This will clear the code from the ECU’s memory and turn off the Check Engine Light.

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