Error Code P245D: What It Means & What To Do?

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Are you looking for the symptoms and causes of the P245D error code? Do you want to know the diagnostic procedure? Then keep reading further. The P245D error code – the failure of the powertrain control module is generally known as the exhaust gas recirculation cooler bypass control circuit high. The exhaust gas is recirculated back to the engine through the EGR valve so that unburnt fuel can be burnt again. The engine computer is functioned in such a way to bypass the exhaust gas recirculation cooler under specific driving condition. The system will be monitored by the PCM to ensure that the operation of the bypass valve takes place as desired. The P245D error will get stored if the EGR bypass valve fails to function properly.

When the engine is in an active regeneration mode, the EGR cooler bypass valve will evade through the EGR cooler and prevents the fouling of EGR cooler. Two parts are available at this diagnoses. When the key is on, the correct status response is monitored when the ECM drives the control line to low and high position. Throughout the whole engine operation, it makes sure that the status response voltage is maintained within 5 to 8 V. A signal between 1.0 and 1.7 volts is sent by the EGR cooler bypass valve. A fault is recorded by the ECM. The other part of the diagnoses looks after the temperature of the EGR. If the bypass mode of the EGR cooler bypass valve was wrong, then the temperature will increase than the expected limit and an error will be activated. The MIL lamp will be lit by the ECM once this diagnostic process fails. Once the diagnostic process is made alright in the 4 consecutive drive cycles, the ECM will turn off the MIL lamp.

What causes this problem with the Exhaust Gas Recirculation Cooler Bypass Control Circuit High?

• Failure of the EGR cooler bypass valve.
• The EGR cooler might be blocked or defective.
• Defective temperature switch.
• The carbon build up is more.
• Broken or malfunctioning of the electrical wires.
• Connectors might be eroded, defective or free.
• Damaged ECM.

1. Exhaust Gas Recirculation Cooler - A damaged exhaust gas recirculation cooler needs immediate replacement so that you can avoid the P245D error getting stored.
2. Exhaust Gas Recirculation Cooler Bypass Valve - Carefully inspect the exhaust gas recirculation cooler bypass valve for any damages or possible faults. If you find it to be defective, change it as soon as possible.
3. Powertrain Control Module - Illumination of the check engine light proves that the powertrain control module is defective or damaged. Get it fixed instantly by replacing it with a new powertrain control module.
4. Engine Control Module - Engine stalling is one of the symptoms for a defective engine control module which needs replacement as soon as possible.
5. Coolant Temperature Sensor - Does your engine overheat very often? Then the coolant temperature sensor can be broken. Fix or change its immediately.
6. Engine Wiring Connectors - A damaged engine wiring connector can cause an electrical problem in your car which will result in malfunctioning. Also, the fuel economy will get reduced as the flow of air will get blocked if the engine wiring connector is damaged. Fix it or replace it instantly.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P245D code by mentioning some major symptoms below:

Common Symptoms

• Unsuccessful emission test by the engine.
• As you accelerate, you will hear the ping or knock on the ignition.
• Fuel consumption is high.
• Diminished engine performance.
• The soon light of the service engine is well-lit.
• Check engine light keeps blinking.

Have a look at some ways with which you can correct the P245D code:

• Fixing the faulty ECM/PCM.
• Replacing the broken exhaust gas recirculation cooler.
• Changing the defective coolant temperature switch.
• The damaged engine wiring connectors must be replaced.

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 EGR, ECM, MIL lamp, temperature switch, carbon buildup, loose connector, corroded, TSB, power plant, bypass valve, corrosion 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:

• You can initially begin with a troubleshoot method and examine for the correct Technical Service Bulletins that is precisely designed for your vehicle by year, model and transmission.
• This can help you in the long run by saving time as it guides you down the right path.
• Locate the component which is linked with the EGR cooler bypass valve and see for any damages and this will be your second step.
• Depending on your vehicle, the circuit may include other components such as temperature switch, bypass valve, EGR valve, EGR cooler, and the ECM.
• Check for injuries like scraping, rubbing, or burn spots by visually inspecting these elements as well as the connectors and its connections to ensure safety.
• Connectors must be checked for erosion, defective pins, and security.
• The EGR temperature switch and the ECM must be inspected along with the wiring connections and the components.
• Look at the specific tech data of the vehicle and see for the configuration of the EGR cooler bypass valve control circuit and approve that every part is included in the circuit which may contain the fuse or a fuse-able link in some applications.

Advanced Steps

• Each and every vehicle have their own procedure as they are specific and you have to use proper diagnostic tools for the process.
• In order to start the process, you have to use a digital multimeter and appropriate technical references.

Voltage check

• The permitted range and reference voltage might vary based on the specific vehicle and configuration of the circuit.
• The troubleshooting charts and the suitable sequence which is included in the specific technical data can help in the correct diagnostic process.
• In this procedure, if there is no power source or ground, then the integrity of the wires, connectors, and other components have to be performed by carrying out a continuity test.
• While doing the continuity test, make sure to remove the power from the circuit and 0-ohms resistance must be set as normal readings for wires and connections.
• No continuity or resistance is a sign of damaged wires that might be open, eroded or shorted and needs a quick replacement.

Common Mistakes When Diagnosing the P245D Code

• Faulty EGR cooler assembly.
• The EGR cooler bypass valve might be broken.
• PCM might be defective.