How to clear check engine light codes I fixed my 1998 Audi A4 with 2.8l 30v and I can't seem to get the check engine light off by disconnecting the battery. Can anyone give me info on how to clear codes. My scanner won't connect to the car either. Thank you Reply Like 08-21-2021, 05:24 PM # 2 4Driver4 Tech Guru Join Date: Oct 2002 Posts: 34,400
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Answer: The faucet-like warning light is the check engine light. You may have more than one problem going on. You may have more than one problem going on. When the P0171-4 codes appear, it means the car's computer is unable to make proper adjustments to control the air-fuel mixture, thus the car almost stopped. This code is triggered when the PCM detects problems with the camshaft position sensor signal on Bank 1, and this is typically caused by a faulty CMP, bad circuitry, or a defective camshaft reluctor wheel. The most common symptoms of a P0341 are rough and/or intermittent starts, rolling idle, and engine problems like misfires and stalling. Dear Audi Experts, I have a 99 Audi Avant A4 1.8T Quattro with 200k miles on it. I am losing compression big time when I drive, the check engine light is on and I have OBD II codes P0422, P1136, P0300 … read more
Here are common symptoms related to the code: Check Engine Light; Decreased Fuel Economy; Poor engine performance; For example, the repair steps for Audi OBD code P2015 may differ from the repair steps for other vehicles. If you're not well-versed with auto repair, it is best to leave the job to a professional.
2. Volkswagen. A damaged wastegate bypass regulator valve can cause this problem in VW vehicles. 3. Isuzu. Turbo nozzle control solenoid sticking or lack of fuel pressure can result in a check engine light with code P0299 in Isuzu vehicles.
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