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 the car's computer is getting a signal from the sensor that checks how dirty the exhaust is, and the signal is too high. It's like if a thermometer was saying it's way hotter than it really is.
The P24B1 code is triggered when the signal from the particulate matter sensor is higher than the expected range, indicating a potential issue with the sensor or its circuit.
The particulate matter sensor is used to measure the amount of soot or particulate matter in the exhaust gases. A 'Circuit High' condition indicates that the sensor is sending a voltage signal to the engine control module (ECM) that is higher than the specified range, suggesting a possible circuit short or sensor malfunction.
• Check Engine Light is on
• Possible decrease in fuel efficiency
• Potential increase in exhaust emissions
• Faulty particulate matter sensor
• Wiring issues such as short circuits or open circuits
• Faulty ECM
Particulate Matter: Tiny particles of soot and other materials produced by combustion.
ECM: Engine Control Module, the computer that manages engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the particulate matter sensor for proper operation.
• Replace the particulate matter sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Digital multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regularly inspect and maintain the exhaust system.
• Ensure the vehicle is serviced according to the manufacturer's schedule.
• Use high-quality fuel to reduce soot production.
Sensor Issue
• Have the vehicle inspected by a professional technician.
• Avoid driving the vehicle extensively until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has been more prevalent in diesel vehicles due to the nature of their exhaust systems.
Moderate – It should be addressed soon to prevent potential damage to the emissions system.
Driving with a malfunctioning emissions system may violate emissions laws and regulations.
• Engine at operating temperature
• Vehicle running at a steady speed
The particulate matter sensor is typically located in the exhaust system, near the diesel particulate filter.
Q: Can I drive with a P24B1 code?
A: It's not recommended to drive extensively with this code, as it may lead to increased emissions and potential damage to the exhaust system.
Q: How do I clear a P24B1 code?
A: The code can be cleared using an OBD-II scanner after the underlying issue has been resolved.
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