P2779 OBD-II: Downshift Switch Circuit Range/Performance
P2779 Severity
Should you fix P2779 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P2779?
Some vehicles equipped with automatic transmission will give the driver the option of selecting the desired gear while driving, known as TAP Shifting. The shifter will usually either have a + and - button on it, or shift side to side when in Drive. If the downshift switch does not function correctly, code P2779 will set and the TAP Shift function will be disabled.
Need a P2779 diagnosis? Trust our experts.
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OBD II Fault Code
- OBD II P2779
OBD-II Code Tap shifting will be disabled is defined as a Downshift Switch Circuit Range/Performance
Some vehicles equipped with automatic transmission will give the driver the option of selecting the desired gear while driving, known as TAP Shifting. The shifter will usually either have a + and - button on it, or shift side to side when in Drive. If the downshift switch does not function correctly, code P2779 will set and the TAP Shift function will be disabled.
Tap shifting will be disabled Symptoms
- Tap shifting will be disabled
Common Problems That Trigger the P2779 Code
- Body Control Module (BCM) failure
- Shift lever assembly failure
- Wiring issue
Ask our experts about P2779.
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