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P204F: Reductant System Performance

The P204F Engine Code: What It Means and How to Fix It The P204F is a generic powertrain diagnostic trouble code that indicates a problem with the reductant system in diesel vehicles equipped with a Selective Catalytic Reduction (SCR) system. If you're an engineer or mechanic, understanding this code is crucial for properly diagnosing and

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SPN 3464: EGR Mass Flow Rate Sensor

SPN 3464 Fault Code: Diagnosis and Repair Guide for Engine Throttle Actuator Control Issues Urgency and Driving Considerations When the SPN 3464 fault code appears, it indicates an issue with the engine throttle actuator control. The severity depends on the specific Failure Mode Identifier (FMI) sub-code: FMI 0: Throttle actuator control current too low FMI

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SPN 7138: EGR Position Sensor

Fault Code SPN 7138: What It Means and How to Fix It Urgency and Severity SPN 7138 is a moderately severe fault code related to the Exhaust Gas Recirculation (EGR) system. While it's not typically necessary to stop driving immediately, it's best to diagnose and repair the issue promptly to prevent potential damage to the

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SPN 2659: EGR Mass Flow Rate

SPN 2659 Fault Codes: Diagnosis and Repair Guide Urgency and Driving Considerations SPN 2659 fault codes indicate an issue with the Exhaust Gas Recirculation (EGR) system. While it may be possible to continue driving with this fault present, it's best to diagnose and repair the problem as soon as possible to prevent further damage and

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SPN 412: EGR Temperature

Fault Code SPN 412: EGR Temperature Sensor Issues Urgency and Severity When the SPN 412 fault code appears, it indicates an issue with the Exhaust Gas Recirculation (EGR) temperature sensor. The urgency depends on the specific Failure Mode Identifier (FMI) associated with the code: In our workshop, we've encountered Fault Code SPN 412 quite frequently,

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SPN 411: EGR Differential Pressure

Fault Code SPN 411: Everything You Need to Know Fault Code SPN 411 indicates an issue with the Exhaust Gas Recirculation (EGR) system, specifically related to the EGR differential pressure sensor. This code is critical to address promptly, as it can lead to increased emissions, reduced engine performance, and potential damage if left unresolved. In

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SPN 2792: EGR Valve Control Circuit

Understanding SPN Fault Code 2792 SPN 2792 is a generic diagnostic trouble code that indicates a problem with the Engine Variable Geometry Turbocharger (VGT) Air Control System. When this code is triggered, it's important to diagnose and address the issue promptly to restore proper turbocharger operation. We’ve seen SPN 2792 faults quite frequently in our

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SPN 2791: Exhaust Gas Recirculation (EGR) Valve Position

The SPN 2791 fault code indicates an issue with the Exhaust Gas Recirculation (EGR) system, typically found in medium and heavy-duty trucks like International and Freightliner models. In our workshop, we've encountered Fault Code SPN 2791 quite frequently across various car makes. Just last week, a 2018 Volvo XC90 came in with reduced power and

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SPN 5466: Aftertreatment Diesel Particulate Filter Operation Status

Understanding SPN Fault Code 5466 SPN 5466 is a generic diagnostic trouble code that indicates a problem with the diesel particulate filter (DPF) system. When this code is triggered, it’s important to diagnose and repair the issue promptly to prevent damage to the DPF and other exhaust components. Urgency and Severity If your vehicle sets

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