VW Spacefox Cam Sensor Fault Tanks Fuel Economy

Had the same symptoms on my 2018 VW Golf TSI. The engine light and sluggish performance turned out to be a failing crankshaft position sensor causing engine synchronization issues and unusual misfires. The sensor was not properly communicating timing data between the crankshaft and camshaft, leading to poor fuel delivery and rough running. This created similar error codes to yours. The repair required removing parts of the timing belt cover to access and replace the sensor assembly. While not the most expensive repair, it needs immediate attention as it can lead to more serious engine damage if ignored. The failing sensor can cause the engine timing to slip, potentially damaging valves and pistons. Getting this fixed at an authorized service center is recommended since proper diagnostic equipment is needed to verify the timing is correct after sensor replacement. The repair typically takes 2-3 hours with programming and testing included. A proper fix resolved all symptoms, restored normal power delivery, fuel economy, and cleared the engine light. Regular maintenance schedules now include checking sensor readings during routine service to catch early warning signs.

Thanks for sharing those details. Your experience sounds identical to what I went through with my Spacefox last spring. The cam sensor issue triggered similar warning lights and misfire symptoms. My mechanic found the timing belt had also started showing early wear during the repair. Did you track how much the total repair ended up costing? Also curious if youve had any related engine light issues since getting it fixed? Knowing the cost would help me budget since these reference value errors can sometimes mask bigger problems under the hood.

Thanks for asking about the follow-up details. After getting the repair done, I am happy to report the engine has been running perfectly with no engine light issues. The crankshaft to camshaft reference value was completely fixed after replacing the defective crank sensor. The total repair came to 340€, which included parts, labor, and the necessary computer programming to sync the new sensor. Much more reasonable than I initially feared, especially considering the potential damage that could have occurred if left unfixed. While they had it open, the mechanic confirmed the timing belt was still in good condition, so no additional work was needed there. The sluggish performance and poor fuel economy completely disappeared after the repair. The engine now runs smoothly just like it did when new. If your reference value errors are showing similar symptoms, I would recommend getting it checked soon to avoid any risk of more serious engine damage. A properly functioning crank sensor is crucial for maintaining correct engine timing and performance.

Thanks everyone for the helpful replies. I finally got the courage to take it to a different shop after reading about your similar experiences. Turns out my misfire issues were indeed related to the camshaft sensor, but they also found the timing belt tensioner was slightly loose. The total bill came to 420€, a bit more than expected since they had to replace both the sensor and adjust the timing belt assembly. The repair took about 4 hours total with all the diagnostic work and recalibration. After getting it back, the difference is night and day. No more engine light, power is back to normal, and fuel consumption has improved significantly. The new shop also showed me the actual sensor readings before and after, which helped explain why the engine was running so poorly. Best decision was switching mechanics, the new team really knew their stuff with these engine timing issues. For anyone facing similar problems, definitely worth getting a second opinion from a shop that specializes in engine diagnostics.