P2171 OBD Error Code: Problem & Solutions

<<See All OBD Codes

The trouble code P2171 can be described as Exhaust Pressure Regulator Vent Solenoid Control Circuit High. The error code P2171 would start triggering when the PCM would detect some fault in exhaust system back pressure regulator vent control solenoid circuit. One thing which you must keep in mind that its symptoms as well as causes would surely vary as it depends upon a number of things.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code. The P2171 trouble code would indicate that an exhaust system back pressure regulator vent control solenoid circuit which is not as per the predetermined limit has been detected by the ECM. Now when this would occur, the fault code would be stored and there would be an illumination of the malfunction indicator light.

What causes this problem with the Exhaust Pressure Regulator Vent Solenoid Control Circuit High?

• Defaults in the exhaust pressure regulator vent solenoid
• Exhaust pressure regulator vent solenoid harness is open or shorted
• Exhaust pressure regulator vent solenoid circuit poor electrical connection

1. Engine Control Module - Is your car engine light still staying ON after resetting or your car engine is turning off for no reason? Then these are some common symptoms indicating that your car engine control module is defective.
2. Throttle Actuator Connector - If the throttle actuator connector is faulty, it may result in the throttle pedal not opening in time and causing improper throttle response and sluggish acceleration. Thus, replace it now!
3. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
4. Throttle Position Sensor - Do you know that the batteries in the sensors are mandated to last five years, so if your automobile is getting close to 5 years old, then it’s correct time to replace them! Visit us to buy best quality throttle position sensor online.
5. Electronic Control Unit - The ECU is a major component of your car's onboard computer. It's used to regulate many systems and subsystems in your car's engine, drive train and other major components. Visit us to buy best quality ECU online.
6. Pedal Position Sensor - The APP sensor essentially tells your car engine that how fast or slow to drive as you will press the gas pedal. When you press down or lift off the throttle, it would send an electrical signal to the vehicle’s ECU or ECM and then would transmit that signal to the fuel system. Visit us to purchase top notch pedal position sensor online at affordable prices.
7. Exhaust System Parts - As the exhaust system parts are likely to withstand excessive heat and extreme temperatures, these are prone to damages. Also, a problem in them leads to strange noises, cracks in the exhaust system pipes or breaking in the exhaust manifolds too. We advise you to change or restore the exhaust system parts as soon as possible.
8. Diagnostic Tools - Take the help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us!

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2171 code by mentioning some major symptoms below:

Common Symptoms

• Illumination in the service engine soon light
• The engine performance might start decreasing
• Issues related to bad acceleration
• Vehicle might start stalling

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P2171:

• The malfunctioning PCM should be repaired or replaced as per the need
• Recondition the non-functioning exhaust pressure regulator vent solenoid
• It is necessary to perform proper service of the unsound exhaust pressure regulator vent solenoid circuit
• Adjust the flawed exhaust pressure regulator vent solenoid harness

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of pcm, ecm, car muffler, body control module, ecu car, pcm module, ecm module, exhaust back pressure regulator and many more. Now all your problems would vanish within no time.

Here are some steps which you should follow in order to diagnose this fault code:

• Use an OBD-II scanner in order to verify that the code is present, and check for other codes for any other type of error or problem that might need attention.
• The current data along with freeze frame data are recorded, and the codes are then cleared to see if they reoccur.
• The vehicle is inspected for any problems with the wiring and connectors to check for loose connections, corrosion, or shorts.
• The tests related to the exhaust pressure regulator vent solenoid control circuit and components may help pinpoint the problem, as well as inspection of the current sensor and cut off switch will further be helping the cause.
• The P2171 error is triggered if there is a physical problem with the exhaust pressure regulator vent solenoid control circuit which could cause the engine performance to go off. 

Common Mistakes When Diagnosing The P2171 Code

There are a lot of mechanics which get confused with an exhaust gas recirculation (EGR) code. Although the exhaust back pressure tube might be situated near the EGR valve, this code must be diagnosed in a completely different manner.