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P2171 Severity
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
The Exhaust Pressure Regulator Vent Solenoid allows excessive pressure in the exhaust system to vent to the atmosphere. If the engine computer detects a failure of the Exhaust Pressure Regulator Vent Solenoid, code P2171 will be stored.
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OBD-II Code Powertrain Control Module (PCM) failure is defined as a Exhaust Pressure Regulator Vent Solenoid Control Circuit High
The Exhaust Pressure Regulator Vent Solenoid allows excessive pressure in the exhaust system to vent to the atmosphere. If the engine computer detects a failure of the Exhaust Pressure Regulator Vent Solenoid, code P2171 will be stored.