Audi DTC P1105 – O2 Sensor Heating Circuit, Bank1-Sensor2 Short to B+
DTC P1105 meaning on Audi
DTC P1105 for Audi indicates a fault in the O2 sensor heating circuit for Bank 1, Sensor 2. This fault specifically points to a short circuit to battery positive (B+), meaning there is an unintended connection between the O2 sensor’s heating circuit and the positive battery terminal.
Audi DTC P1105 symptoms
Symptoms of DTC P1105 on an Audi may include poor fuel economy, rough idling, hesitation during acceleration, and an illuminated Check Engine Light on the dashboard. Additionally, the vehicle may fail an emissions test due to increased emissions output.
Audi DTC P1105 causes
The most common causes of DTC P1105 on an Audi are a damaged O2 sensor, a short circuit in the wiring harness, or a faulty engine control module (ECM). Environmental factors such as moisture or corrosion can also contribute to this issue.
Audi DTC P1105 seriousness
While DTC P1105 may not cause immediate drivability issues, it is important to address this fault promptly to prevent further damage to the vehicle’s emissions system. Ignoring this fault can lead to decreased fuel efficiency and potential long-term engine damage.
How to diagnose DTC P1105 on Audi
To diagnose DTC P1105 on an Audi, a mechanic will typically use a diagnostic scanner to retrieve the fault code and perform a visual inspection of the O2 sensor and its wiring. They may also test the O2 sensor’s heating circuit for continuity and check for any signs of a short circuit.
How to fix DTC P1105 on Audi
To fix DTC P1105 on an Audi, the faulty O2 sensor or damaged wiring harness will need to be replaced. It is crucial to use OEM parts to ensure proper functionality. After replacing the faulty components, the vehicle should be tested to ensure the fault code does not reappear.
How to erase DTC P1105 on Audi
Once the underlying issue causing DTC P1105 on an Audi has been resolved, the fault code can be cleared using a diagnostic scanner. By clearing the code, the Check Engine Light will turn off, indicating that the fault has been addressed successfully.
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