Volkswagen DTC P1105 – O2S Heating Circuit Bank 1 Sensor 2 Short To Positive
DTC P1105 meaning on Volkswagen
DTC P1105 on a Volkswagen indicates an issue with the O2S (Oxygen Sensor) Heating Circuit for Bank 1 Sensor 2. This fault code specifically points to a short circuit to positive voltage in the heating circuit of the downstream oxygen sensor located on bank 1 of the engine.
Volkswagen DTC P1105 symptoms
Symptoms of DTC P1105 on a Volkswagen 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.
Volkswagen DTC P1105 causes
The most common causes of DTC P1105 on a Volkswagen are a short circuit in the wiring harness of the O2S heating circuit, a faulty downstream oxygen sensor, or a malfunctioning engine control module (ECM).
Volkswagen DTC P1105 seriousness
While DTC P1105 may not cause immediate drivability issues, it is important to address this fault code promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance and fuel efficiency.
How to diagnose DTC P1105 on Volkswagen
To diagnose DTC P1105 on a Volkswagen, a mechanic will typically use a diagnostic scanner to retrieve the fault code and perform a visual inspection of the O2S heating circuit wiring and connectors. They may also test the downstream oxygen sensor and check for any signs of damage or corrosion.
How to fix DTC P1105 on Volkswagen
To fix DTC P1105 on a Volkswagen, the faulty wiring or connectors in the O2S heating circuit should be repaired or replaced as needed. If the downstream oxygen sensor is found to be faulty, it should be replaced with a new, OEM-quality sensor. Additionally, any issues with the engine control module (ECM) should be addressed by a qualified technician.
How to erase DTC P1105 on Volkswagen
Once the underlying issue causing DTC P1105 on a Volkswagen has been resolved, the fault code can be cleared using a diagnostic scanner. This will reset the check engine light and allow the vehicle’s ECM to monitor the system for any new faults.
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