2010 Volkswagen Jetta
Mileage
150,233
Service Date
12/7/2023
Services Performed
- P0193 fuel rail pressure circuit – high input Found spot where harness rubbed on oil filter cap. 1 Wire has worn through and into the copper but minimally. Removed wire cover and cleaned wire, inspected and found only the 1 wire had slight damage – cleaned and taped wire separate and put some plastic protectant covering on to help not damage wire further. Tested continuity and resistance – wire is OK at this time .Cleared faults and P0193 immediately. Tested fuel pressure sensor, tested within spec (12v at pin 1, 5v and pin 2 and 3), recommend replace fuel pressure sensor and see if high input fault goes away. Wire that is slightly open is not for fuel pressure sensor so it is unrelated to faults at this time. If high input returns will need to test physical fuel pressure at rail compared to sensor reading with new sensor. Also a common issue is a bad ground in the wiring harness which can also be repaired without replacing the whole engine harness. When due for next oil change or larger repair work, recommend removing EGR and Throttle valve to perform permanent wire repair. Should be fine in the mean time with temp repair.
- Replaced rail sensor and cleared faults. Circuit fault did not return. Nox and regen required faults returned. Performed a forced regen while standing, took a couple tries to get it started but started and completed. System is in good condition with very low measured soot content. N0X regen still required, must enable and perform during drive. Circuit fault has not returned after several test drives. DS headlight bulb out – replaced with new.
- Performed forced regen while sitting 2x – took about 5 tries to get started but once started completed and got a "system OK" after completion both time. Lights remained on in dash for Nox limit and regen required. Performed test drive in regen parameters for 50mi, lights would not reset. Using scan tool, enabled auto regen feature and test drove for another 50+ miles until lights shut off. No faults stored after over 100mi of test driving and after regen is completed. Circuit fault has not returned.
Kristi G. gave our service a 5 star review on 12/7/2023
