What Does P2776 Mean?
The PCM has detected abnormally low voltage in the upshift switch circuit. This indicates a short to ground, switch failure, or wiring issue preventing proper upshift switch signal in manual shift mode.
Common Causes
35%
Short to ground in upshift switch wiring harness
30%
Failed upshift switch with internal short circuit
20%
Damaged or corroded switch connector causing ground fault
10%
Mechanical switch stuck in closed/actuated position
5%
Failed TCM/PCM input circuit with internal short
Diagnostic Steps
1
Step 1: Measure voltage at upshift switch connector with switch released (should show reference voltage)
2
Step 2: Disconnect switch and check for short to ground in harness using ohmmeter
3
Step 3: Test switch operation with ohmmeter to verify proper opening and closing
4
Step 4: Inspect switch connector and terminals for corrosion, damage, or moisture intrusion
5
Step 5: Check shift paddle or lever mechanism for binding that might keep switch actuated
Estimated Repair Cost
$75 - $350
Parts + labor, varies by vehicle and location
The PCM has detected abnormally low voltage in the upshift switch circuit. This indicates a short to ground, switch failure, or wiring issue preventing proper upshift switch signal in manual shift mode.
The most common cause of P2776 (Upshift Switch Circuit Low) is: Short to ground in upshift switch wiring harness
Typical repair costs for P2776 range from $75 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Manual upshift function will be disabled or transmission may upshift continuously. Vehicle remains fully drivable in automatic mode with no safety concerns, only reduced driver control.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2776 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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