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thomasstar1
RS5 Camshaft Sensor Causing Poor Starts & Power Loss
4 comment(s)
thomasstar1 (Author)
Thanks for the detailed response. That really matches my stalling engine symptoms. The rough idling and power loss has been driving me crazy. Its good to know the camshaft position sensor and wiring harness was the culprit in your case. Like you said, I want to get this fixed quickly to avoid any serious engine damage. Would you mind sharing what you paid for the full repair? Also curious if youve had any similar engine misfire issues since getting it fixed? My local dealership quoted a surprisingly high price so Im trying to get a sense of what others paid for this type of work.
sophiewilliams38
Good news, I took care of that camshaft sensor issue we discussed and havent experienced any engine misfires or rough idling since the repair. The fix turned out to be simpler and more affordable than expected, just 95 Euro to repair the faulty wiring connection to the automotive sensor. The mechanic found the problem was a loose plug connection causing intermittent sensor failure, not a completely failed sensor unit as initially suspected. This meant no expensive parts replacement was needed. The check engine light cleared right after they secured the connection properly. The car runs perfectly now, no more power loss or difficult starts. If your symptoms match what I experienced, you might want to have them check the sensor connections first before replacing any parts. Could save you significant money compared to the dealership quote. The entire repair took less than an hour once they identified the specific issue with the crankshaft position readings. Much better outcome than paying for a complete sensor replacement.
thomasstar1 (Author)
Thanks for the input. Took my car to a new mechanic yesterday based on the advice here. Turns out my camshaft sensor issue was also just faulty wiring, similar to what others experienced. The mechanic found corroded wires causing intermittent connection problems. Total repair came to 180 Euro including diagnostic time and fixing the wiring harness. No need for a full sensor replacement, which saved me a lot compared to the dealership quote. The check engine light is now gone and the engine runs perfectly again, no more rough starts or power loss issues. Really glad I got a second opinion instead of going with the expensive dealer repair quote. The timing issues and engine misfire problems completely disappeared after fixing those wiring connections. Whole repair took about 2 hours. Money well spent to prevent any potential long-term engine damage. Thanks again for helping me avoid an unnecessarily expensive repair.
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sophiewilliams38
Had the same issue on my 2017 RS4. The symptoms matched exactly, difficult starts, power loss, and check engine light indicating a camshaft sensor problem. The root cause was a faulty automotive sensor connection. The wiring harness to the camshaft position sensor had partially corroded, causing intermittent signal issues. This led to rough idling and timing problems since the engine control unit wasnt getting accurate crankshaft position data. This is a serious issue that needs immediate attention. Continuing to drive with faulty sensor readings can damage engine timing and potentially cause internal engine damage. The fix involved: Testing sensor connectivity, Replacing the corroded wiring harness, Installing a new camshaft position sensor, Clearing fault codes, Test driving to confirm proper operation After the repair, the engine performance returned to normal with smooth idle and proper power delivery. The whole job took about 4 hours at the shop. Getting the genuine parts is important for this repair since aftermarket sensors can be unreliable. Recommend having this diagnosed and fixed soon to prevent potential engine damage. Make sure to get the wiring checked, not just the sensor itself.