On vehicles with a manually shiftable automatic transmission, the ECU essentially looks for confirmation of the current selected gear from the up/down shift switch and the mode actuator. If there is a problem with this data, a P0819 DTC will be saved.
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What Transmission Do I Have?
How Serious is the Code?
A P0819 diagnostic trouble code may cause the manual shifting function on your automatic transmission to become disabled, and the car may be put into limp mode which would restrict you to a single forward gear
Symptoms
Symptoms of a P0819 include:
- Disabled manual shifting function
- Limp mode
Causes
- Damaged wiring
- Corroded connectors
- Failed up/down shift switch
How to Diagnose the Code?
When diagnosing a P0819 OBDII trouble code, a mechanic could start by inspecting the wiring and connectors. If no issues are found, then the upshift/downshift switch will need to be tested.
What Repairs Will Fix P0819?
- Repair damaged wiring
- Replace faulty connectors
- Replace up/down shift switch
Related Codes
N/A
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?
