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P0829 is a diagnostic trouble code (DTC) for "5-6 Shift". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P0829 code is a generic powertrain code related to the transmission, including pressure faults and sensor failures. In this case, the vehicle's engine control module (ECM) has found a fault in the 5-6 shift function.
Codes related to the P0829 include:
A P0829 code is stored when the ECM detects a problem with the vehicle shifting into Gears 5 and/or 6.
When a vehicle has a computer controlled automatic transmission, it uses shift solenoids to manage fluid transfers between the hydraulic circuits. This then actuates a change in the gear ratio in the transmission. Changing the gear ratios allows a vehicle to change speed.
Calculations using throttle position, engine load, and engine and vehicle speed help the ECM ascertain the correct gear ratio. Note, manufacturer code parameters vary (be sure to check your vehicle service manual or YourMechanic for specifics to your make and model). If the ECM detects a different gear ratio than the one it desires relating to the 5 and 6 gears, a P0829 code can be stored.
Several problems may cause a P0829 code including:
Symptoms of a P0829 code may include:
A mechanic may use several methods to diagnose a P0829 trouble code, including:
If the transmission fluid is low or dirty, it could cause insufficient fluid pressure and store the P0829 code. It is recommended to check and flush or fill a vehicle’s transmission fluid before proceeding with any subsequent diagnosis and repairs.
Because a vehicle’s safe driving operation may be impacted due to faults that store a P0829 code, this code is considered a potentially serious code. When this code appears, it is recommended to immediately take your vehicle to your local service center or mechanic for repair and diagnosis.
Several repairs can fix a P0829 trouble code and include:
Additional shift solenoid-related trouble codes will most likely appear with a P0829 code. It is always recommended to diagnose and repair trouble codes in the order in which they appear, as some may simply be a symptom of a larger problem.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.