P2777

Upshift Switch Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Delays when upshifting
Switching to emergency mode of the gearbox
Check Engine Light Illuminates
Decreased fuel efficiency

Causes

Short circuit in switch circuit
Upshift switch malfunction
Wiring harness damage
Poor contact in connectors
Problems with the transmission control module

How to Fix

Check the integrity of the wiring harness
Test the upshift switch
Check connections and connectors
Measure resistance and voltage in the circuit
If necessary, replace the switch or repair the wiring

Related codes

P2778 P2779 P2776