P2AA7

Engine Coolant Bypass Valve B Position Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Engine overheating
Unstable engine operation
Reduced cooling system efficiency
Increased fuel consumption

Causes

Valve position sensor malfunction
Open or short circuit in the circuit
Problems with wiring harness or contacts
Sticky or broken bypass valve
Engine control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Test valve position sensor
Inspect and replace bypass valve if necessary
Check connections and wiring harness
If necessary, replace the position sensor

Related codes

P2AA6 P2AA8 P2AA9