P3477

Cylinder 10 Exhaust Valve Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
Possible misfire in cylinder 10

Causes

Open or short circuit in wiring harness
VVT solenoid valve malfunction
Poor contact in the connector
Problems with the engine control unit
Mechanical damage to valve chain

How to Fix

Check the integrity of the wiring harness to the 10th cylinder
Test valve solenoid resistance
Inspect connectors for corrosion or damage
Check voltage at valve connector
If necessary, replace the solenoid or repair the wiring.

Related codes

P3475 P3476 P3478