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detlefmaier4

VW Scirocco Rough Start & Power Loss, Bad Cam Sensor Fix

My Scirocco starts rough and runs with low power lately. The engine warning light is on and I suspect the camshaft sensor might be failing. The car has 44713km on the clock and its a 2017 diesel model. Had some bad repairs before, so Im looking for advice from anyone who dealt with similar symptoms. Has anyone experienced this and can recommend what to check first? How much should sensor replacement typically cost if thats the issue?

4 comment(s)

williblaze3

Had similar symptoms on a 2014 VW Golf TDI. The rough idling and power loss matched exactly what you describe. The check engine light triggered due to a camshaft position sensor failure. After diagnosis, the problem was actually a damaged wiring harness connecting to the sensor, not the sensor itself. Moisture had corroded the connection pins. The crankshaft sensor readings were also inconsistent, which commonly happens when there are electrical connection issues. The repair involved replacing the wiring harness section and cleaning the connector housing. This was less complex than a full sensor replacement but required careful attention to ensure proper connection seating. The symptoms you describe strongly point to either the sensor or its connections. Would recommend checking the wiring and connections first before replacing parts. A proper diagnostic scan will show if you have intermittent signal loss from the camshaft position sensor. This is a fairly common issue that typically doesnt cause permanent engine damage if addressed promptly. Having the right diagnostic equipment is crucial for accurate troubleshooting.

detlefmaier4 (Author)

Thanks for sharing that repair experience. Your Golf had nearly identical symptoms to my Scirocco. Would you mind sharing what the fix ended up costing? The automotive sensor issues seem to be a common weak point across VW models. After the wiring harness repair, did you have any recurring camshaft sensor problems or similar electrical gremlins? Want to make sure I budget properly for potential related issues that might pop up.

williblaze3

Just had my car back from the shop after they fixed the camshaft sensor connection issue. Total repair cost was 95€ for replacing the corroded wiring section and cleaning the connector housing. Much better than paying for a complete sensor replacement. Since fixing the faulty connection six months ago, the engine misfire symptoms completely disappeared. The check engine light hasnt come back, and the car runs perfectly with full power restored. No more rough starts or performance issues. The mechanic confirmed what I suspected, these sensor connection problems are fairly common but straightforward to fix when diagnosed correctly. The important part was addressing it before the faulty camshaft position readings could cause more serious engine problems. My advice would be to get it checked soon. The repair cost is reasonable compared to letting it develop into a bigger issue. Just make sure they properly test the crankshaft sensor signals too, since they work together as part of the engine timing system. No electrical issues have returned since the repair. The key was having a thorough diagnostic scan done first to pinpoint the exact connection problem.

detlefmaier4 (Author)

I took my Scirocco to the shop yesterday after getting this helpful advice. The mechanic confirmed it was indeed a wiring issue affecting the camshaft position sensor readings. Total repair came to 120€, which included cleaning the connections and replacing a small section of damaged wiring harness. The timing issues and rough idling problems cleared up immediately after the fix. The engine warning light is now off and the car runs with full power again. Really glad I didnt just replace the sensor without checking the wiring first. The shop also ran a full diagnostic scan to verify the crankshaft signals were good and no other sensor issues were present. They showed me the corroded wiring that was causing the problems, definitely worth fixing before it could cause more expensive damage. Thanks for helping me avoid unnecessary parts replacement. Would definitely recommend others check their sensor wiring connections first when experiencing similar symptoms.

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