Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the heater in a sensor that checks for tiny particles in the car's exhaust. It's like a tiny heater isn't working properly in a machine that helps the car stay clean.
The P24B3 code indicates that the control circuit for the particulate matter sensor heater is open or not functioning properly.
The particulate matter sensor is used in diesel engines to monitor the amount of soot in the exhaust system. It includes a heater to ensure accurate readings by maintaining the sensor at the correct temperature. The P24B3 code is triggered when the Engine Control Module (ECM) detects an open circuit or a malfunction in the heater control circuit of the particulate matter sensor.
• Check Engine Light illuminated
• Potential decrease in engine performance
• Possible increase in exhaust emissions
• Faulty particulate matter sensor
• Open or shorted wiring in the sensor circuit
• Faulty ECM or PCM
Particulate Matter Sensor: A device that measures the amount of soot in the exhaust system.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors of the particulate matter sensor.
• Test the sensor heater circuit for continuity.
• Replace the particulate matter sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $500
Moderate
• Ford F-250
• Chevrolet Silverado
• Ram 2500
• Regular maintenance of the exhaust system
• Routine checks of the sensor wiring
• Timely replacement of faulty sensors
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid driving long distances until the issue is resolved to prevent further damage.
Check with the vehicle manufacturer as emissions-related components may be covered under warranty.
This code is more common in diesel vehicles due to their reliance on particulate matter sensors for emissions control.
Moderate – It should be addressed soon to prevent potential emissions issues.
Ignoring this code may lead to failing emissions tests and increased pollution.
• Engine running
• Exhaust system at operating temperature
The particulate matter sensor is typically located in the exhaust system, near the diesel particulate filter.
Q: Can I drive with a P24B3 code?
A: It's possible to drive short distances, but it's recommended to fix the issue to avoid emissions problems.
Q: What happens if I ignore the P24B3 code?
A: Ignoring the code may lead to increased emissions and potential damage to the exhaust system.
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