VW Crafter Oil Sensor Triggers Multiple Warning Lights

Had the exact same issue on my 2019 VW Transporter 2.0 TDI. The oil sensor was triggering multiple warnings including oil pressure alerts. The temp sensor connector had degraded over time, causing intermittent signal failures to the ECU. While checking error codes helped identify the general area, the real problem was the wiring harness connection to the oil temperature sensor, not the sensor itself. The repair involved cleaning the connector pins and replacing the damaged wiring sleeve where it had rubbed against the engine block. This type of issue can seem major due to all the warning lights, but its actually a straightforward fix for an experienced mechanic. Important point: When multiple warning lights activate together with oil pressure warnings, always verify if its a sensor issue before continuing to drive. In my case, the oil temp sensor malfunction was causing false readings, but actual oil pressure was normal when tested. The repair wasnt particularly complex, though accessing the sensor connection point required removing some components for proper access. Worth getting it fixed promptly since faulty oil sensor readings can mask real oil pressure problems if they develop later.

Thanks for sharing your experience. My VW also had similar oil temp sensor problems last year. The automotive sensor readings were all over the place and triggering unusual warnings. My mechanic found that both the temp sensor itself and part of the wiring had corrosion damage. Makes sense what you mentioned about checking the connections first, wish I had known that before replacing parts unnecessarily. Did you remember roughly what the repair cost in your case? Just curious since I ended up paying around 450€ total including parts and labor. Also wondering if youve had any other car sensor issues pop up since getting it fixed?

Thanks for asking about the repair costs. After seeing the mechanic last week, it turned out to be a much simpler fix than your situation. The automotive sensor itself was actually fine, just needed to repair the cable connection where it plugs into the oil temperature sensor. Total bill came to 95€ which covered fixing the faulty wiring connection. Much better than replacing the entire sensor unit unnecessarily. The oil gauge and warning lights cleared up immediately after the repair. Since fixing that connector issue, all car sensor readings have been stable. No more unusual temperature sensor alerts or oil pressure warnings. The mechanic did mention these connection problems are fairly common on these models, especially around the engine oil temperature sensor area where heat and vibration can affect the wiring over time. Worth mentioning that getting the actual connector fixed rather than just replacing parts saved both time and money. The engine has been running perfectly normal with accurate sensor readings for the past week.

Got the repair done yesterday and wanted to share the outcome. Turns out my engine temperature sensor was actually working fine, but the wiring harness had become brittle from engine heat. The mechanic found exposed wires where the protective sleeve had cracked, causing intermittent short circuits that triggered the warning lights. When checking the car diagnostics, they discovered the temp sensor was sending erratic signals due to the damaged wiring. Total repair came to 180€ which included replacing the wiring section and testing all related engine sensor connections. Much cheaper than I expected, especially after hearing about others paying more for complete sensor replacements. Interesting that the oil gauge started working perfectly as soon as they fixed the wiring. No more false warnings or fluctuating readings. Good reminder that sometimes the simple fix is the right one. Really glad I asked here before authorizing unnecessary parts replacement. Now everything is reading correctly and all warning lights have stayed off. The mechanic also showed me where to check for similar wire damage in the future, which was helpful.