Guide To P024C OBD Error Code Solutions

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The Powertrain Control Module observes the Charge Air Cooler Bypass Position Sensor “A” signal. The PCM sets this code when there is a general malfunction within the position sensor or its circuit. This Code may be caused by a mechanical and/or electrical fault. Due to this trouble code you may experience problems like reduction in engine performance, especially at low RPM levels, Hesitation upon acceleration etc. The code just means that the sensor signal was not within specifications.

P024C is a kind of OBD-II Diagnostic Trouble Code. It is considered generic because it applies to all makes and models of vehicles. The ECM illuminates the check engine light with P024C and associated codes when it detects a condition outside of a particular range within the Intercooler Bypass Control circuit or within the sensors involved. The Charge Air Cooler Bypass Position Sensor is constructed into the Air Flap Actuator on most vehicles. This Air Flap Actuator restricts airflow through the charge air cooler. PCM controls this Actuator when PCM is unable to control it, it will set code P024C. PCM may also defuse the turbo or supercharger to intercept further damage to the system.

P024C Charge Air Cooler Bypass Position Sensor “A” Circuit code is set when there is a general malfunction within the position sensor or its circuit.

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

Below is the list of possible causes due to which this trouble code P024C arises:

• Failure of Charge Air Cooler Bypass Position Sensor “A”
• Charge Air Cooler Bypass Position Sensor ‘A’ harness is open or shorted
• ECM problem
• Bad electrical connection
• Frayed Fuse/ relay
• Flawed Pin/ Connector
• Some aftermarket accessories and performance modifications
• Defective ECU strategies or components will prevent proper regeneration

1. 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.
2. Pin/connector - Make sure the Pin/ connector should not be corroded and have broken lock tab because these could become the main factor creating Code P024C.
3. Defective Fuse/relay - Fuses and Relays though they are small parts but plays very important role in smooth functioning of your vehicle, so, make sure to replace them if discover faulty.
4. 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.
5. Air Cooler Bypass Control Valve - As per its name this Air Cooler Bypass Control Valve allows turbo-boosted charged air to bypass a charge-air cooler, if this valve is faulty can create lots of problems.
6. Defective Position Sensor - This is the main cause for this trouble code P024C. If the Charge Air Cooler Bypass Position Sensor is malfunctioned then this code will automatically set. Make sure it should be working properly. If found faulty replace it at earliest.

Below are the common symptoms for the code P024C. 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.

• Faulty or damaged wiring
• Difficulty while acceleration
• Reduction in engine performance, especially at low RPM levels
• Low fuel mileage
• Misfiring of engine
• Vehicle invading into “limp mode”
• Engine Light ON

Trouble code P024C 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. Keep the below mentioned points in mind while fixing this code:

• Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame.
• Check for damage to the wiring harness connector.
• Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.
• Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P024C.

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Troubleshooting steps may differ depending upon manufacturer. A good starting point is always a technical service. Several tools may be required to successfully diagnose this code.

• First of all, try to locate your charge air cooler bypass control valve. Once it is located, inspect for any physical damage.
• 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 and harness for the bypass valve 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. In this case, you can try replacing it. Make sure the manufacturer also recommends a new valve in this case.
• Verify the integrity of the circuit by performing numerous basic electrical tests. If everything checks out, there may be some input tests you could do involving the connector at the valve to verify the ECM functionality with the valve.
• 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 P024C 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.