A lot of components go into changing gears, so if the ECU detects a problem with one of the transmission parts responsible for making the 5-6 shift, a P0829 DTC will be saved.
Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.
What Transmission Do I Have?
How Serious is the Code?
Having a P0829 diagnostic trouble code is actually quite serious, and can result in a number of transmission problems, including slipping and premature wear due to the increased line pressure that occurs with limp mode.
Symptoms
Symptoms of a P0829 include:
- Slipping between gears
- Unusually abrupt shifts
- Failure to shift
- Limp mode
Causes
- Low or dirty transmission fluid
- Internal pressure issues
- Failed shift solenoid(s)
- Damaged or corroded wiring and connectors
- TCM issues
How to Diagnose the Code?
The transmission fluid is the first thing that should be checked when diagnosing a P0829 OBDII trouble code. The wiring and connectors should also be checked for signs of damage. After that, the solenoids, pressure regulator system and valve body may need to be checked.
Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.
What Transmission Do I Have?
What Repairs Will Fix P0829?
- Service the transmission
- Repair or replace any damage wiring and connectors
- Repair any transmission leak
- Replace failed transmission solenoid
- Replace failed pressure regulator
- Repair or replace valve body
- Replace or reprogram TCM
Related Codes
- P0729 – Gear 6 Incorrect Ratio
- P0730 – Incorrect Gear Ratio
- P0731 – Gear 1 Incorrect Ratio
- P0732 – Gear 2 Incorrect Ratio
- P0733 – Gear 3 Incorrect Ratio
- P0734 – Gear 4 Incorrect Ratio
- P0735 – Gear 5 Incorrect Ratio
- P0736 – Reverse Incorrect Gear Ratio
