P2170

Exhaust Pressure Regulator Vent Solenoid Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
The engine goes into emergency mode

Causes

Open or short circuit in solenoid control circuit
Exhaust pressure regulator solenoid malfunction
Problems with wiring harness or contacts
Engine control unit (ECU) malfunction
Corrosion or oxidation of contacts

How to Fix

Check the integrity of the solenoid control circuit
Check the resistance and operation of the solenoid
Inspect the wiring harness and contacts for damage
Clean contacts from corrosion and oxidation
If necessary, replace the exhaust pressure regulator solenoid

Related codes

P2171 P2172 P2173