P0828
PowertrainTransmissionmoderate severityUp and Down Shift Switch Circuit High
What P0828 Means
The signal from the manual up/down shift switch circuit is reading higher than expected. This often indicates an open circuit or short to voltage.
Symptoms
- Manual shift mode inoperative
- Transmission warning light on
- Erratic shift behavior
Common Causes
- Open circuit in switch wiring
- Short to voltage in circuit
- Faulty up/down shift switch
- Faulty transmission control module
Diagnostic Steps
- Read stored codes and freeze frame data
- Measure switch circuit signal voltage
- Inspect wiring for opens or shorts to power
- Replace switch or repair wiring as needed
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✓ Autel official store
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