Steering angle sensor · G85
Steering Angle Sensor G85 Repair
Audi · VW · Porsche — fault 00778, B1168 04, ABS/ESP lights
Thematic AI illustration
ABS/ESP lights on, fault 00778 or B1168 04 showing, or the problem appeared after steering column work? We will diagnose the fault and determine the right recovery approach.
Depending on the design and diagnostics, the work may include an installation and calibration check, data recovery for a supported module, or repair or replacement of the unit. The fault code alone does not determine the repair method.
You can come with the car or ship the agreed unit by courier. For workshops, a repairability check by read file is available. We confirm applicability by the full part number, a photo of the label and a diagnostic report. Calibration on the car may be required after installation.
Part number check
// Enter the number with or without the suffix — spaces and dashes are fine. For example: 8K0 953 568 D
Reference — families and suffixes
| Family | Suffixes |
|---|---|
| 8K0 953 568 | D, B, E, F, G, L, M, Q |
| 8R0 953 568 | S, Q |
| 4H0 953 568 | A, E, H, B, G, K, J, F |
| 4G0 953 568 | A |
| 4M0 907 129 | suffixes not listed — check by photo |
| 4N0 907 129 | suffixes not listed — check by photo |
| 80A 907 129 | suffixes not listed — check by photo |
| 80D 907 129 | suffixes not listed — check by photo |
| 85E 907 129 | suffixes not listed — check by photo |
The reference is for checking, not an unconditional promise of support. The default status is "Requires inspection": compatibility is confirmed by the full part number, a photo of the label and a diagnostic report. The suffix in the number matters: different suffixes are different revisions.
For specialists
To order as a workshop we need: the unit label, the full part number with a case description, the circumstances of the failure and, if available, a diagnostic protocol or read file.
We provide memory and CPU details for a specific revision after confirming it — we do not publish general year-based mappings.
Technical source on code 00778: wiki.ross-tech.com — page 00778 (Steering angle sensor)FAQ
Can fault 00778 be fixed by flashing alone?
No — the method depends on the cause: calibration, position, communication or the module itself. We check first, then choose the solution.
What is B1168 04?
A code for a broken or inaccurate link to the sensor. The cause can be wiring, the clock spring or the module itself — diagnostics will show where the problem is.
Are G85 and the clock spring the same thing?
No. The design depends on the platform: in some cars the sensor is in the steering column module, in others it is part of the clock spring. We check by the label before talking about replacement.
Do you accept units by post?
Yes — by prior arrangement. Workshops can also use the check by read file: label, full number and problem description.