A staggering 200 fault codes (SPN error codes) can occur daily in a 500-vehicle fleet. Managing these 1,400 weekly codes for severity and closure is a massive undertaking. Manually reviewing these diagnostic trouble codes (DTCs) is time-consuming and increases the risk of overlooking critical alerts, potentially leading to costly breakdowns. This article focuses on SPN 524042, a fault code that often doesn’t require immediate action.
check engine light fault code
Automated solutions can significantly reduce this burden. In a pilot program with a 500-truck fleet, software successfully prioritized and automatically resolved over 4,000 fault codes, saving hours of manual labor and preventing potential errors.
It’s crucial to understand that not all fault codes signal critical issues. Many are minor and can be safely ignored. This article, based on an analysis of over 18 million fault codes, outlines ten such minor codes, including SPN 524042, that shouldn’t cause undue alarm.
Top 10 Minor Fault Codes in Trucking: SPN 524042 and Others
Here are ten common fault codes categorized as “minor” based on their frequency and impact:
1. Aftertreatment 1 Diesel Exhaust Fluid Tank Volume (SPN 1761)
This exhaust code was the most frequent minor code, occurring 144,727 times. It simply indicates a low DEF level. Simple Fix: Refill the DEF tank.
2. RDF Mounting Misaligned (SPN 524042)
SPN 524042, a driver-assist code, indicates a misaligned radar. Minor misalignment typically doesn’t impact driving. Simple Fix: No immediate action is needed. Replace a bent or broken RDF during scheduled maintenance.
3. J1939 Network #1 Primary Vehicle Network (SPN 639)
This electrical code signals lost communication between the engine control module (ECM) and another device. While the check engine light illuminates, vehicle performance is usually unaffected. Simple Fix: Address the issue during the next scheduled maintenance.
4. Window Lift Motor (SPN 520256)
This electrical code often triggers when a window regulator motor overheats and temporarily shuts down to prevent damage. Simple Fix: Cycling the ignition usually resets the system. Persistent issues may require motor replacement.
5. Forward View Imager System (SPN 1705)
This driver-assist code relates to the front-view camera system. The system might be disabled until the issue is resolved. Simple Fix: A software update at the dealership is often the solution.
6. Mirror Heater (SPN 520289)
This driver-assist code indicates a problem with the mirror heater, often weather-related. Simple Fix: Address the issue during scheduled maintenance or at the dealership.
7. J1939 Network #2 (SPN 1231)
This electrical code indicates a communication issue between the Motor Control Module (MCM) and the Aftertreatment Control Module (ACM). Simple Fix: If the issue persists after a basic diagnostic (unplugging and reconnecting the diagnostic device), address it during scheduled maintenance.
8. Forward Road Image Processor Issue (SPN 524127)
This electrical code often results from a lack of power to the Model Predictive Control (MPC) or an obstructed radar view. This can affect features like adaptive cruise control. Simple Fix: Check for obstructions. If the code persists, have a technician investigate during the next scheduled maintenance.
9. Control Module Improper Shutdown (SPN U3001)
This electrical code triggers when a control module detects low voltage. Simple Fix: Inspect for damaged or corroded connector pins and wiring.
10. High-Speed CAN Communication Bus (SPN U0001)
This electrical code indicates a communication error on the CAN bus, which connects the vehicle’s computers. Simple Fix: Clearing the code might resolve intermittent issues. Persistent problems require further diagnosis.
Utilizing Predictive Maintenance Solutions
Predictive maintenance software can help manage fault codes by categorizing them by severity and predicting potential failures. These solutions translate complex codes into actionable insights, saving time and reducing downtime.
Remember, while SPN codes are valuable diagnostic tools, they don’t pinpoint the root cause of a problem. A qualified technician should perform a thorough diagnosis to identify and address the underlying issue.
