Definition of Code P0825
Code P0825 is a generic powertrain code related to the transmission, including pressure faults and sensor failures. In this case, the Engine Control Module (ECM) has detected a fault in the electrical circuit of the gear lever push-pull switch to the transmission range correlation circuit.
Codes related to P0825 include:
P0820: Gear Lever X-Y Position Sensor Circuit
P0821: Gear Lever X Position Circuit
P0822: Gear Lever Y Position Circuit
P0823: Gear Lever X Position Circuit Intermittent
P0824: Gear Lever Y Position Circuit Intermittent
What does Code P0825 mean?
A gear lever push-pull switch is used in vehicles with a manual-shift automatic transmission. If the ECM receives a voltage or resistance signal via the gear lever push-pull circuit that is outside the allowed tolerances, a P0825 code will be stored.
What causes Code P0825?
Several issues can cause a P0825 code, including:
Spilled liquids on the gear lever push-pull switch inside the cabin
Faulty, damaged, or defective gear lever push-pull switch
Malfunctioning or defective gear lever push-pull switch
Damaged, corroded, or disconnected electrical wiring and connectors from the gear lever push-pull switch
What are the symptoms of Code P0825?
Symptoms of a P0825 code may include:
A check engine light or warning light may illuminate
The manual shift option may be disabled
The vehicle may show no symptoms other than a stored error code
The overdrive light may flash
Decreased fuel efficiency
The vehicle may shift roughly
The transmission may go into “limp” mode
How does a mechanic diagnose Code P0825?
A mechanic may use several methods to diagnose a P0825 fault code, including:
Using an OBD-II scanner to check for a stored P0825 fault code
Visually inspecting the cabin for any spills that may have entered the up-down shift switch
Visually inspecting the wiring circuits for signs of damage, corrosion, or wear
Checking the reference voltage and ground signals at the gear lever push-pull switch and actuators
Using a digital volt/ohmmeter to check continuity and resistance if the reference voltage and/or ground signals were open
Testing all associated circuits and switches for continuity and resistance
Common mistakes when diagnosing Code P0825
Before checking and diagnosing faulty transmission wiring, ensure to check if any liquid has been spilled on the gear lever inside the cabin. Clean and repair any damaged wiring or connectors at the shift switch location, then reset and test the system again before diagnosing and performing more complicated wiring repairs.
How severe is Code P0825?
Since the safe operation of a vehicle can be affected due to faults that store a P0825 code, this code is considered potentially serious. When this code appears, it is recommended to bring your vehicle to your local service center or a mechanic immediately for repair and diagnosis.
What repairs can fix Code P0825?
Several repairs can correct a P0825 fault code and include:
Cleaning the gear lever area of any spilled liquids
Repairing or replacing any damaged or shorted electrical wiring, harnesses, or connectors
Repairing the damaged or faulty gear lever push-pull shift switch
Clearing all codes, testing the vehicle, and rescanning to see if any codes reappear