KlaroFault codes › P24xx
P24xx fault codes: Auxiliary emission controls
EGR valve and cooler, fuel vapour recovery, secondary air injection and the diesel particulate filter: the systems that clean up what the engine emits.
How to read this code
The letter P names the system: Powertrain. The next digit, 4, locates the fault: auxiliary emission controls.
These codes are generic: they mean the same thing on every make. Some manufacturer tools display them with a two-digit suffix, such as P0101-00 or P010100: the suffix refines the fault type, and the base code keeps its meaning.
The codes of this family, part by part
Fuel vapour recovery (EVAP)
- P2401Evaporative Emission System Leak Detection Pump Control Circuit Low
- P2402Evaporative Emission System Leak Detection Pump Control Circuit High
- P2404Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance
- P2407Evaporative Emission System Leak Detection Pump Sense Circuit Intermittent/Erratic
- P2418Evaporative Emission System Switching Valve Control Circuit/Open
- P2419Evaporative Emission System Switching Valve Control Circuit Low
- P2422Evaporative Emission System Vent Valve Stuck Closed
Exhaust gas recirculation (EGR) valve
- P2413Exhaust Gas Recirculation System Performance
- P2425Exhaust Gas Recirculation Cooling Valve Control Circuit/Open
- P2457Exhaust Gas Recirculation Cooling System Performance
Diesel particulate filter (DPF)
- P242FDiesel Particulate Filter Restriction - Ash Accumulation (Bank 1)
- P2452Diesel Particulate Filter Pressure Sensor A Circuit
- P2453Diesel Particulate Filter Pressure Sensor A Circuit Range/Performance
- P2454Diesel Particulate Filter Pressure Sensor A Circuit Low
- P2455Diesel Particulate Filter Pressure Sensor A Circuit High
- P2458Diesel Particulate Filter Regeneration Duration
- P2459Diesel Particulate Filter Regeneration Frequency
- P2463Diesel Particulate Filter Restriction - Soot Accumulation (Bank 1)