Guide To P245B OBD Error Code Solutions

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When the engine remains in the live regeneration mode, the EGR cooler bypass valve will go around the EGR cooler which in turn prevents the fouling of the EGR cooler. There are 2 diagnostic parts. The ECM will drive the control line to low and high when the key is on and looks after the correct status response. The status response voltage will be within 5-8 volts throughout the engine operation. A signal which lies between 1.0 and 1.7 V will be sent by the bypass valve of the engine cooler. If this takes place, the ECM will record a fault. If the EGR cooler bypass valve was in wrong bypass mode, then the temperature of the EGR will surpass the expected temperature which finally activates a fault. Soon after the failure of the diagnostic process, the MIL lamp will be illuminated by the ECM. The MIL will be turned off by the ECM when the diagnostic procedure is made alright in each of the 4 consecutive drive cycles.

Do you find the temperature switch to be faulty? Then there’s a chance that the P245B error is stored in your vehicle. The malfunctioning of the PCM is commonly known as the exhaust gas recirculation cooler bypass control circuit. The unburnt fuel will be burnt when the exhaust gas is recirculated to the engine again by the EGR valve. The programming of the ECM is done in such a way that it bypasses the EGR cooler under a particular driving condition. The correct operation of the bypass valve as expected is carefully monitored by the PCM. If the EGR bypass valve malfunctions, then the P245B error code will get stored.

What causes this problem with the Exhaust Gas Recirculation Cooler Bypass Control Circuit Range/Performance?

• Damaged EGR cooler bypass valve.
• The EGR cooler might be choked or damaged.
• Faulty temperature switch.
• High carbon buildup.
• The electrical wiring might be malfunctioning or broken.
• The connectors might be set loose, faulty or eroded.
• ECM might be faulty.

1. Exhaust Gas Recirculation Cooler - The P245B error can be avoided if the defective exhaust gas recirculation cooler is immediately fixed.
2. Exhaust Gas Recirculation Cooler Bypass Valve - Check for any possible damages in the exhaust gas recirculation cooler bypass valve. Get it repaired or replaced at once.
3. Powertrain Control Module - Malfunctioning of the powertrain control module can arise due to power relay or voltage issues. Changing the defective PCM can help you to get rid of the P245B error in your vehicle.
4. Engine Control Module - Poor idling is a common symptom for a defective engine control module. Get the replacement for faulty engine control module from PartsAvatar.
5. Coolant Temperature Sensor - The coolant temperature sensor can turn out to be faulty if there is black smoke from the engine. Replacing it quickly can help you to get rid of the P245B error code.
6. Coolant System Parts - If the coolant fins of the radiator are filled with debris, the coolant temperature will be reduced and the coolant system will turn out to be faulty. Fix it as soon as possible.

It is vital 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 P245B here:

Common Symptoms

• The engine might fail the emission test.
• During acceleration, you might hear the ignition ping or knock.
• Consumption of fuel is more.
• Engine performance is poor.
• Illumination of the service engine soon light.
• The check engine light will keep flashing or blinking.

Want to correct the Trouble Code P245B? Read these points mentioned below:

• The broken ECM/PCM must be changed.
• The faulty exhaust gas recirculation cooler must be fixed.
• Changing the malfunctioning coolant temperature switch.
• The engine wiring connectors which are cracked need replacement.

Parts Avatar Canada is here to solve all your issues related to car parts. We have stocked a wide range of best-priced EGR cooler bypass valve, EGR cooler, PCM, ECM, temperature switch, coolant system, EGR cooler assembly and a lot more to help you out in fixing your car.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P245B code to be stored:

• Before you start the troubleshooting procedure, check for the correct Technical Service Bulletins (TSB's) which is specific for your vehicle by year, model and transmission.
• It can actually help you in saving time in the long run by guiding you in the right path.
• Secondly, you must identify all components connected with the EGR cooler bypass circuit and inspect for any defects.
• There might be several components included depending on the specific vehicle which includes the temperature switch, bypass valve, EGR valve, EGR cooler, and the ECM.
• Now, perform a careful inspection of the wires for damages like scraping, rubbing, or burn spots.
• Also, you have to visually check the connectors and its connections for protection, erosion and damaged pins which includes the wires, connected to various parts like EGR temperature switch and the ECM.
• Always refer the tech data of the vehicle to check the alignment of EGR cooler bypass valve control circuit and make sure that every part are included within the circuit which also contains the fuse or a fuse-able link in certain applications

Advanced Steps

• The advanced step for each and every vehicle is specific and it needs suitable tools to accomplish diagnosis correctly.
• The process will need a digital multimeter and certain technical references for your vehicle.

Voltage checks

• Based on the specific vehicle and configuration of the circuit, both the reference voltage and acceptable range will change.
• Troubleshooting charts and the appropriate sequence are included in the specific technical data to help with the proper diagnostic procedure.
• Continuity test has to be done to check the integrity of the wires, connectors and other connections if there is no power source or ground found in the process.
• Carry out the continuity test by removing power from the circuit and 0-ohms resistance must be set as normal reading for wires and connectors.
• The faulty wires which are open, shorted or eroded must be replaced or fixed if there is no resistance or continuity.

Common Mistakes When Diagnosing the P245B Code

• Malfunctioning of the EGR cooler assembly.
• Failure of the EGR cooler bypass valve.
• PCM might be damaged.