Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a sensor in the car that helps control the engine's temperature is not working right. It's like a thermometer that isn't reading correctly.
The code P24C4 indicates an issue with the EGR cooler bypass position sensor, which is not operating within its expected range on Bank 1.
The EGR (Exhaust Gas Recirculation) cooler bypass position sensor monitors the position of the EGR cooler bypass valve. If the sensor's readings exceed the learned limits set by the engine control module (ECM), the P24C4 code is triggered. This typically indicates a problem with the sensor itself, the bypass valve, or the associated wiring.
• Check Engine Light is on
• Reduced engine performance
• Increased emissions
• Faulty EGR cooler bypass position sensor
• Wiring issues (e.g., damaged wires or poor connections)
• Malfunctioning EGR cooler bypass valve
EGR: Exhaust Gas Recirculation
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the EGR cooler bypass position sensor.
• Test the EGR cooler bypass position sensor for proper operation.
• Replace the EGR cooler bypass position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the EGR cooler bypass valve if it is malfunctioning.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Ram 1500
• Regular maintenance of the EGR system
• Periodic inspection of wiring and connectors
• Timely replacement of faulty sensors
Sensor Issue
• Avoid driving with the Check Engine Light on for extended periods.
• Have the vehicle inspected by a professional mechanic if unsure.
Check with the vehicle manufacturer for specific warranty coverage on emissions-related components.
This code has been associated with issues in vehicles that have EGR systems designed to reduce emissions by recirculating exhaust gases.
Moderate – While the vehicle may still be drivable, it is important to address the issue to avoid increased emissions and potential engine performance problems.
Driving with a malfunctioning EGR system may lead to increased emissions, which can be illegal in some regions. It is advisable to have the issue corrected promptly.
• Engine at operating temperature
• Vehicle at idle and under load conditions
The EGR cooler bypass position sensor is typically located near the EGR valve or cooler, usually on the engine block or intake manifold.
Q: Can I drive with a P24C4 code?
A: While you can drive with this code, it is recommended to fix it soon to avoid increased emissions and potential engine issues.
Q: How can I reset the Check Engine Light after repairs?
A: You can use an OBD-II scanner to clear the code after repairs. If the issue is resolved, the light should stay off.
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