OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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Fault codes
P244A
Diesel Particulate Filter Differential Pressure Too Low Bank 1
Auxiliary Emissions Control
Medium severity
P244B
Diesel Particulate Filter Differential Pressure Too High Bank 1
Auxiliary Emissions Control
Medium severity
P244E
Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 2
Auxiliary Emissions Control
Medium severity
P2451
Evaporative Emission System Switching Valve Stuck Closed
Auxiliary Emissions Control
Low severity
P2455
Diesel Particulate Filter Pressure Sensor A Circuit High
Auxiliary Emissions Control
Medium severity
P245C
Exhaust Gas Recirculation Cooler Bypass Control Circuit Low
Auxiliary Emissions Control
High severity
P245D
Exhaust Gas Recirculation Cooler Bypass Control Circuit High
Auxiliary Emissions Control
High severity
P2460
Diesel Particulate Filter Pressure Sensor B Circuit Low
Auxiliary Emissions Control
Medium severity
P2463
Diesel Particulate Filter Restriction - Soot Accumulation
Auxiliary Emissions Control
Medium severity
P2466
Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3
Auxiliary Emissions Control
Medium severity
P2469
Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 3
Auxiliary Emissions Control
Medium severity
P246B
Vehicle Conditions Incorrect for Diesel Particulate Filter Regeneration
Auxiliary Emissions Control
Medium severity
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