P024F OBD Error Code: Problem & Solutions

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If you are confronting complications with your vehicle like Poor acceleration, engine is becoming sluggish on acceleration and cherry red hot catalytic converter; it indicates that your vehicle might have trouble code P024F. This should not be ignored else will lead you end up spending a lot.

P024F Charge Air Cooler Bypass Position Sensor A Circuit High code is set when there is an abnormally high electrical value within the position sensor or its circuit

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Charge Air Cooler Bypass Position Sensor "A" Circuit High. This code is set when there is a abnormally high electrical value within the position sensor or its circuit. Due to this the engine oil will reveal dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to after burn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil is shortened significantly. PCM may also defuse the turbo or supercharger to intercept further damage to the system.

The ECM illuminates the check engine light with P024F and associated codes when it monitors any problem with intercoolers bypass control circuit or sensor and the code is set when the Charge Air Cooler Bypass Position Sensor 'A' is out of factory specifications.

What causes the problem of Charge Air Cooler Bypass Position Sensor “A” Circuit High?

Below is the list of possible causes due to which this trouble code P024F arises:

• Faulty Charge Air Cooler Bypass Position Sensor “A”
• Open or shorted harness
• Defective Fuse/ relay
• Frayed Pin/ Connector
• ECM issue
• Bad electrical connection
• Defective ECU strategies or components

1. Damaged Wiring Harness - Damaged or Broken Wiring Harness could be an obstruction in bypass valve operational range of motion. So, it should be replaced for the proper functioning of your vehicle and to avoid this error code.
2. Engine Control Module - The ECM/ PCM, it’s a crucial part of the vehicle’s on-board computer, which usually resides in either the engine compartment or under one of your front seats, it provides the brain for the engine of the vehicle and makes sure the timing and emissions control system work properly. So, if it founds faulty should be repaired or replaced as required.
3. Charge Air Cooler - A charge air cooler is used to cool engine air after it has passed through a turbocharger, but before it enters the engine. The idea is to return the air to a lower temperature, for the optimum power for the combustion process within the engine. Make sure this is working fine to avoid major problems.
4. Bypass Control Circuit - Always have a check on bypass control circuit to avoid major problems with your costly vehicles else you will end up spending a lot. If this discovered inoperative, repair or replace as required.

Below are the common symptoms for the code P024F. If you experience below mentioned symptoms please bring your vehicle to a reputable repair facility. If neglected it could develop into something much more serious fairly quickly.

• Cherry red hot catalytic converter.
• Poor acceleration.
• The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
• Reduced power from the turbo/ supercharger.
• Vehicle Invading into “limp mode”.
• Misfiring of engine.

Trouble code P024F is not difficult to diagnose and repair but it always good to have a qualified technician to look after your vehicle when this error code arises. Getting access to a known fix can save you time and money during diagnosis. Keep the below mentioned points in mind while fixing this code:

• Disconnect the Valve first
• The red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.
• Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.
• Look at the plug wires to make sure they are not burnt or laying on the exhaust.
• Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine.

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The step by step analysis and diagnosis is recommended by a qualified technician using high grade diagnostic tools to check for all the problems and solving them. This may require the tools like OBD code reader; Hose clamp pliers, Lubricant, Multimeter, Basic socket, wrench, ratchet and screwdriver set, Battery terminal cleaner etc.

• First of all, inspect for any obvious physical damage to the charge air cooler bypass control valve and make sure engine is off.
• Inspect if there are any obstructions in the valve’s range of motion by simply removing it completely and clean it completely before reinstalling.
• Observe the wires closely which are involved within the circuit. Those should not have nicks, cuts or signs of corrosion. Make sure to disconnect battery before performing any electrical repairs.
• Inspect carefully the mechanical operation of the valve itself, if you find the valve sticking and there is nothing obstructing it, it means the valve it defective.
• Verify the integrity of the circuit by performing numerous basic electrical tests.

There is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the P Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.

Common Mistakes When Diagnosing the P024F Code

There are some tips and advices which one should keep in mind while fixing this error code to avoid inviting any further problems. Usually, people make mistakes like they forget to switch off the engine before troubleshooting. So, please let the engine cool first and disconnect the battery before performing any electrical repair. Please wear Personal protective equipment and always verify and record the integrity of your battery and charging system before further troubleshooting.