P1472 2018 GMC Sierra Code - Particulate Matter Sensor Signal Message Counter Incorrect
Quick Answer
The P1472 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Particulate Matter Sensor Signal Message Counter is Incorrect. Common causes include Faulty Particulate Matter Sensor, Wiring or connection issues, Software glitches in the ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1472 2018 GMC Sierra indicates Particulate Matter Sensor Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Particulate Matter Sensor, Wiring or connection issues, Software glitches in the ECM.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1472 2018 GMC Sierra Description
The P1472 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Particulate Matter Sensor Signal Message Counter is Incorrect. This code is specifically related to the diesel particulate filter (DPF) system in the vehicle. The DPF is responsible for capturing and storing soot particles from the exhaust gases to reduce emissions. The Particulate Matter Sensor is a crucial component of this system as it monitors the amount of particulate matter in the exhaust stream.
Common Causes of P1472 2018 GMC Sierra
- Faulty Particulate Matter Sensor
- Wiring or connection issues
- Software glitches in the ECM
- Exhaust leaks near the sensor
- Contaminated DPF
Symptoms of P1472 2018 GMC Sierra
- Reduced engine power
- Increased fuel consumption
- Check engine light illuminated
- Frequent regeneration cycles
- Poor acceleration
How to Fix P1472 2018 GMC Sierra
- Diagnose the issue by using a scan tool to read the DTC and inspect the Particulate Matter Sensor and related components.
- Test the sensor's functionality by checking its resistance and voltage readings.
- Replace the Particulate Matter Sensor if it is found to be faulty.
- Inspect and repair any damaged wiring or connections.
- Perform a forced regeneration of the DPF system to clear any accumulated soot and reset the ECM.
Cost to Fix P1472 2018 GMC Sierra
The cost of repairing a P1472 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of replacing a Particulate Matter Sensor can range from $200 to $500, including parts and labor. Additional costs may apply if there are wiring or connection issues that need to be addressed. It's recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates can vary between different repair shops and locations.
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Frequently Asked Questions about P1472 2018 GMC Sierra Code
1. What does the OBDII code P1472 mean on a 2018 GMC Sierra?
P1472 indicates that the particulate matter sensor's signal message counter is incorrect, suggesting an issue with the sensor communication or functionality.
2. What are the common symptoms of P1472 in a 2018 GMC Sierra?
Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, or the vehicle entering limp mode.
3. What causes the P1472 code to appear on a 2018 GMC Sierra?
Common causes include a faulty particulate matter sensor, wiring or connector issues, software glitches in the engine control module (ECM), or excessive soot buildup.
4. Can I drive my 2018 GMC Sierra with the P1472 code?
While the vehicle may still be drivable, it’s not recommended as the issue could lead to further engine performance problems or damage to the emissions system.
5. How do I diagnose the P1472 code on a 2018 GMC Sierra?
Start by scanning the vehicle with an OBDII tool to confirm the code, inspect the particulate matter sensor and its wiring for damage, and check for soot buildup or software updates needed for the ECM.
6. How do I fix the P1472 code on my 2018 GMC Sierra?
Repairs may include cleaning or replacing the particulate matter sensor, repairing damaged wiring or connectors, updating the ECM software, or clearing soot buildup in the exhaust system.
7. Is the particulate matter sensor expensive to replace on a 2018 GMC Sierra?
The cost to replace the particulate matter sensor can vary, typically ranging from $200 to $500, depending on parts and labor.
8. Can a clogged diesel particulate filter (DPF) cause the P1472 code?
Yes, excessive soot buildup in the DPF can interfere with the particulate matter sensor’s readings and trigger the P1472 code.
9. Will clearing the P1472 code with a scan tool fix the issue?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.
10. Do I need to update the engine control module (ECM) to fix P1472 on my 2018 GMC Sierra?
In some cases, an ECM software update may be necessary if the issue is related to a known software bug or communication error. Check with a GMC dealer for updates.
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