P2171

Exhaust Pressure Regulator Vent Solenoid Control Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Deterioration in acceleration dynamics
Increased fuel consumption
Unstable engine idling
Reduced engine power

Causes

Short circuit in solenoid control circuit
Exhaust pressure regulator solenoid malfunction
Wiring harness damage
Problems with the engine control unit (ECU)
Corrosion of contacts or connectors

How to Fix

Check the integrity of the solenoid control circuit
Test solenoid resistance
Inspect connectors and wiring for damage
If necessary, replace the exhaust pressure regulator solenoid
Reset the error code and check if it returns

Related codes

P2170 P2172 P2173