P1116 – Volkswagen DTC

Volkswagen DTC P1116 – O2S Sensor Heater Circuit Open Bank 1 Sensor 1

DTC P1116 meaning on Volkswagen

DTC P1116 on a Volkswagen indicates an issue with the O2S (Oxygen Sensor) Sensor Heater Circuit Open for Bank 1 Sensor 1. This means that the heating element in the oxygen sensor located in the exhaust system before the catalytic converter on bank 1 (cylinder bank containing cylinder 1) is not functioning properly.

Volkswagen DTC P1116 symptoms

Symptoms of DTC P1116 on a Volkswagen may include:

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

Volkswagen DTC P1116 causes

The common causes of DTC P1116 on a Volkswagen are:

• Faulty O2S Sensor Heater Circuit
• Open or short circuit in the wiring related to the O2S sensor heater
• Defective O2S sensor heater relay

Volkswagen DTC P1116 seriousness

While DTC P1116 may not cause immediate drivability issues, it can lead to poor engine performance and increased emissions. Ignoring this fault code can result in potential damage to the catalytic converter and other engine components over time.

How to diagnose DTC P1116 on Volkswagen

To diagnose DTC P1116 on a Volkswagen, follow these 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 O2S sensor heater for any visible damage or corrosion
3. Check the O2S sensor heater relay for proper operation
4. Test the O2S sensor heater circuit for continuity and resistance

How to fix DTC P1116 on Volkswagen

To fix DTC P1116 on a Volkswagen, consider the following steps:

1. Replace the faulty O2S sensor if the heater circuit is confirmed to be defective
2. Repair any damaged wiring or connectors in the O2S sensor heater circuit
3. Replace the O2S sensor heater relay if found to be faulty
4. Clear the fault code and perform a test drive to ensure the issue is resolved

How to erase DTC P1116 on Volkswagen

To erase DTC P1116 on a Volkswagen, you can:

1. Use an OBD-II scanner to clear the fault code
2. Disconnect the vehicle’s battery for a few minutes to reset the ECU and clear the code
3. After clearing the code, ensure the issue has been resolved by monitoring the vehicle’s performance and checking for any reoccurrence of the fault code

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