52 Paccar MX Fault Codes
Paccar MX ECM Fault Codes
Paccar MX-series diesel ECM fault codes across aftertreatment, EGR, turbo, and derate systems.
Aftertreatment15 codes
Paccar MX Aftertreatment
DPF, DEF, SCR, and NOx-reduction system faults.
EGR11 codes
Paccar MX EGR
Exhaust gas recirculation valve, cooler, and flow faults.
Turbo11 codes
Paccar MX Turbo
Turbocharger boost control and air-handling faults.
Derate15 codes
Paccar MX Derate
Engine protection and emissions inducement power-limiting faults.
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