P1721
Gear 1 Incorrect Ratio.
- Other
- Powertrain
- Manufacturer code
How this code is built
- P
- SystemPowertrain
- 1
- Defined byThe manufacturer
- 7
- AreaTransmission
- 21
- FaultThe specific fault in that area
Guide
Writing the guide for P1721. The first open of a code takes up to a minute.