42 Volvo Fault Codes
Volvo ECM Fault Codes
Volvo diesel ECM fault codes across aftertreatment, EGR, turbo, and derate systems.
Aftertreatment8 codes
Volvo Aftertreatment
DPF, DEF, SCR, and NOx-reduction system faults.
EGR10 codes
Volvo EGR
Exhaust gas recirculation valve, cooler, and flow faults.
Turbo7 codes
Volvo Turbo
Turbocharger boost control and air-handling faults.
Derate17 codes
Volvo Derate
Engine protection and emissions inducement power-limiting faults.
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