P26BC

Engine Coolant Bypass Valve C Stuck Closed

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Engine overheating
Unstable engine operation
Increased fuel consumption
Hot air from the heating system
Check Engine light comes on

Causes

Mechanical valve jamming
Electrical wiring problems
Control relay malfunction
Valve corrosion or contamination
Problems with the engine control unit

How to Fix

Check the condition of the coolant bypass valve
Check the integrity of electrical wiring and connectors
Check the operation of the control relay
Clean or replace a stuck valve
If necessary, replace the engine control unit

Related codes

P26BB P26BD P26BE