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Gear Selection Fault:
These fault codes indicate the transmission control unit cannot correctly determine the selected gear position. Ignoring this fault can lead to sudden loss of drive.
What Do Fault Codes 17090 / P0706 / 001798 Mean?
On Audi vehicles fitted with the Multitronic CVT gearbox, fault codes 17090, P0706 and 001798 refer to a malfunction in the gear selector range sensor. The TCU receives implausible or conflicting signals about lever position.
Common Audi Models Affected
- Audi A4 Multitronic
- Audi A6 Multitronic
- Audi A5 Multitronic
- Audi A7 Multitronic
Common Causes
- Worn or failed selector range sensor
- Internal Multitronic wiring faults
- Oil contamination affecting sensor signals
- TCU internal circuit failure
- Incorrect gearbox adaptation values
Typical Symptoms
- PRNDS flashing or disappearing
- Vehicle refuses to engage Drive or Reverse
- Intermittent no-start (in Park)
- Limp mode activated
- Fault codes return immediately after clearing
Our Audi Multitronic Repair Solution
Dealers usually quote for full gearbox or mechatronic replacement. We carry out targeted diagnostics: selector sensor signal testing, wiring integrity checks, oil contamination inspection, and TCU evaluation. In many cases, the issue can be repaired without replacing the entire transmission.
PRNDS Flashing or Gear Not Recognised?
Speak to an Audi Multitronic specialist now.
📞 Call 07779 836677