Audi DTC P1122 – O2 Sensor Heater Circuit, Bank2-Sensor2 Open
DTC P1122 meaning on Audi
The DTC P1122 for an Audi indicates an issue with the O2 sensor heater circuit for Bank 2, Sensor 2. This means that the heating element in the oxygen sensor located downstream of the catalytic converter on the second bank of cylinders is not functioning properly.
Audi DTC P1122 symptoms
Common symptoms of DTC P1122 on an Audi may include poor fuel economy, rough idling, hesitation during acceleration, and an illuminated check engine light on the dashboard.
Audi DTC P1122 causes
The most common causes of DTC P1122 on an Audi are a faulty O2 sensor, damaged wiring or connectors in the sensor circuit, or a blown fuse related to the O2 sensor heater circuit.
Audi DTC P1122 seriousness
While the vehicle may still be operable with DTC P1122, it is important to address this issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance and fuel efficiency.
How to diagnose DTC P1122 on Audi
To diagnose DTC P1122 on an Audi, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the O2 sensor and its wiring. They may also test the sensor’s resistance and check for proper voltage supply to the heater circuit.
How to fix DTC P1122 on Audi
To fix DTC P1122 on an Audi, the faulty O2 sensor heater circuit components need to be identified and replaced if necessary. This may involve replacing the O2 sensor itself, repairing damaged wiring or connectors, or replacing a blown fuse related to the heater circuit.
How to erase DTC P1122 on Audi
Once the underlying issue causing DTC P1122 on an Audi has been resolved, the fault code can be cleared using a diagnostic scanner. This will turn off the check engine light and reset the vehicle’s onboard computer system.
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