P2778

Upshift Switch Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Upshift delay
Check Engine Light Is On
The car may go into emergency gearbox mode

Causes

Overdrive switch malfunction
Open or short circuit in the circuit
Poor contact in connectors
Problems with the transmission control module

How to Fix

Check the condition of the overdrive switch
Inspect the chain for breaks or damage
Check contacts in connectors
Scan the transmission control module for errors

Related codes

P2777 P2779 P2780