I got a new
OEM valve cover from Cascade German today. Hopefully that won't leak like the 2 aftermarket one's I got from IDParts. I'll put that on this weekend if I have some time.
tl;dr Can anyone give me tips on troubleshooting error code 00771? Details below.
Since I've been driving it a while I thought it's be good to check for error codes. I have no CEL.
I'm still getting these:
01304 - Radio
49-00 - No Communications
01336 - Company Data Bus for Comfort System
80-00 - Single-Wire Operation
00771 - Fuel Level Sensor (G)
30-10 - Open or Short to Plus - Intermittent
Correct me if I'm wrong here.
01304 - I have an aftermarket deck so this one is expected.
01336 - I know there is something wrong with one of the rear doors (I can't remember which one it is) wiring or door latch. I can lock the car and get the alarm beep with the door open. That might cause this one.
00771 - I'd like to figure this one out. I noticed the gas gauge would move close to 1/8th of a tank for a while the revert back. Maybe it's wrong most of the time and the ~1/8th movement is correct.
Troubleshooting:
- I put in a new sending unit and seal from Cascade German. That didn't fix the movement or remove the code.
- I removed the cluster and checked the pins for damage. They all looked good.
Next steps:
- The Ross-Tech site suggests a possible wiring problem between the fuel level sensor and the instrument cluster. I'll check that this weekend if I have time.
- It also says to check the measuring block value. I need to check out the Ross-Tech site to find which one. Just found this in VWVortex* "Measuring values for the fuel sender are in Group 002.3 = Fuel Sender Resistance"
Can anyone give me any troubleshooting tips for the 00771 error code?
Thank you!
Edit: Added info from VWVortex*