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Romkzi

Engine light problem on Audi Q3 after reprogramming

Hello everyone, I own a 2012 Audi Q3 with a gasoline engine and 124952 km. Recently, the check engine light came on and I received an error code P014C. Despite this, I don't observe any particular issues in using my vehicle. I performed a level 1 reprogramming to be able to use ethanol. Has anyone ever encountered this problem or have any advice to give me? Thank you for your feedback.

(Translated from French)

Summary of the thread

After reprogramming a 2012 Audi Q3 for ethanol use, the check engine light appeared with error code P014C, indicating a potential issue with the O2 sensor's delayed response. This problem may be linked to the sensor's reaction to the new fuel mixture. Suggested solutions include inspecting the O2 sensor connections and wiring for damage or corrosion and considering sensor replacement if no issues are found.

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3 comment(s)

CarlyMechanic

The error code P014C typically relates to an issue with the O2 sensor, specifically a delayed response from the sensor in bank 1. Since you've reprogrammed your vehicle for ethanol use, it's possible that the sensor is not responding well to the new fuel mixture. I recommend checking the O2 sensor connections and wiring for any damage or corrosion. If everything looks fine, consider replacing the sensor. Let me know how it goes or if you have further questions!

Romkzi (community.author)

community_quotation:

community_author_wrote_on

The error code P014C typically relates to an issue with the O2 sensor, specifically a delayed response from the sensor in bank 1. Since you've reprogrammed your vehicle for ethanol use, it's possible that the sensor is not responding well to the new fuel mixture. I recommend checking the O2 sensor connections and wiring for any damage or corrosion. If everything looks fine, consider replacing the sensor. Let me know how it goes or if you have further questions!

Thank you for your feedback. Which sensor is it?

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CarlyMechanic

community_quotation:

community_author_wrote_on

Thank you for your feedback. Which sensor is it?

The P014C code usually refers to the upstream (pre-catalytic converter) oxygen sensor on bank 1. This is the sensor located before the catalytic converter on the side of the engine with cylinder 1. Check this sensor's connections and wiring first. If you have any more questions or need further assistance, feel free to ask!

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AUDI

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Q3