P048C - OBD Trouble Code

<<See All OBD Codes

OBD error code P048C flashing? Worried about what it means? How bad it is for your vehicle? Well, OBD error code P048C is a generic powertrain code. It applies all the OBD-II equipped vehicles. Though it applies to every vehicle yet the steps to repair them may vary depending upon the manufacturer.

OBD error code will be set by your vehicle’s powertrain control module when it will detect that there are some performance problems within the exhaust pressure control valve position sensor circuit. In other words, when the PCM will detect that there are incorrect signals from the EPC circuit it will set up this code. Just to enhance your knowledge further, you must be aware of the fact that in few cases PCM, uses the signals from the IAT sensor, Exhaust back pressure sensor and MAP sensor to determine the valve’s control. Also, the exhaust pressure control valves are more common in diesel engines. To know about few of its common causes have a look below.

What causes this problem with the Exhaust Pressure Control Valve Position Sensor/Switch Circuit Range/Performance?

• Malfunctioning EPC (exhaust pressure control valve)
• Bad or poor EPC wiring and circuits
• Defective powertrain control module
• Open or shorted exhaust pressure control valve harnesses
• Poor electrical connections

1. Exhaust Pressure Control Valve - If you are facing OBD error code P048C, chances are that your vehicle demands EPC valve replacement. Don’t worry as you have arrived at the right place. We have in stock for you high end EPC valves from top brands.
2. Exhaust Parts - Having problems with your exhaust parts can really escalate your problem with the error code P048C. So, we definitely recommend you to stop thinking and replace your damaged or faulty exhaust parts today.
3. PCM - We have in stock PCM for all make and models and that too at the best prices ever online. Why not have a look?
4. Manifold Absolute Pressure Sensor - Need MAP sensors? Well, now is the time you get one for yourself with us at PartsAvatar and get your MAP Sensors at best prices online.
5. Intake Air Temperature Sensor - Considering that pcm takes signal from MAP sensor, IAT sensor and EPC sensor together, either of them if damaged can lead to problems. So replace the faulty IAT sensors today.
6. Diagnostic Tools - Well, in order to detect and diagnose all the obd error code, you will need these diagnostic tools.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P048C here:

Common Symptoms

• Steep decline in engine performance
• Check engine light (CEL) illumination
• Hard starting condition
• Increase in vehicle emissions

Now, when we already know the causes and the symptoms of the problem, next thing on our list should be to get rid of that problem, or in other words to correct that problem. Now, the question is how will you do so? Well it’s simple. All you need to do is to follow the following steps

Firstly, check and repair the faulty exhaust pressure control valve circuit and its related wirings and connectors, if found lost, damaged or corroded.

Next, make sure that your vehicle’s PCM and all exhaust parts, IAT sensors and MAP sensors are in good working condition to ensure the disappearance of this fault code P048C.

If you continue to face these problems and need parts to fix it you can find them with us. We have stocked a wide range of best priced ECM, PCM, IAT sensors and a lot more to help you out in fixing your car.

If you want to or really wish to diagnose the issues your vehicle is facing, you will need to follow certain instructions. Also, if you wish to check whether your vehicle is facing obd error code P0147 or not, you will need to follow these simple steps:

Firstly, scan the codes and then freeze the frame data and after that you will have to scan the engine control module for the code and then freeze the frame data.

On discovering any coolant temperature or air intake temperature codes, fixing them before attempting to fix P048C is must. Also look for the technical service bulletins to guide you through your diagnosis.

Also check the factory diagram to ensure what wiring is supposed to be where in order to diagnose the issues with it.

In order to check and test the solenoid, remove the solenoid connectors after the vehicle is cooled down. After that use a digital multimeter, while keeping the ignition on to check the solenoid power. It usually should be 12 V. In case the readings exceed, then there is an open circuit.

Also, check the ground portion of the circuit and the power side of the circuit.