Adblue and NOx reduction systems training will help you to quickly and accurately diagnose one of the most tricky systems, right first time.

Attending this Adblue and NOx reduction systems training will help you make money and keep your customers happy diagnosing AdBlue faults quickly and accurately.

This course will teach you how to diagnose beyond the code, to diagnose faults that can't just be cleared or reset and how to reset the system successfully after a repair:

Typical faults affecting AdBlue, NOx and SCR Systems are listed below.

P0420 Catalyst System Efficiency (bank 1 Diesel Oxidation Catalyst) Below Threshold (Bank 1) / Inadequate effect
P1019 NOx sensor Signal too slow
P1032 NOx sensor Signal too large
P1033 NOx sensor Signal too small
P146D AdBlue tank heating 1 feedback Short to B+
P146F AdBlue tank heating 2 feedback Short to B+
P148C AdBlue tank heating output stage 2 Component defective
P149D AdBlue delivery pump Open circuit
P149E AdBlue delivery pump Short to ground
P149F AdBlue delivery pump Short to B+
P14AA Exhaust flap Faulty operation
P2000 NOx catalytic converter bank 1 Faulty operation
P202A AdBlue tank heating Open circuit
P202B AdBlue tank heating Short to ground
P202C AdBlue tank heating Short to B+
P203A AdBlue tank level sensor Electrical fault
P203B AdBlue tank level sensor Signal improbable
P203C AdBlue tank level sensor Short to ground
P203D AdBlue tank level sensor Short to B+
P2047 AdBlue dosing valve bank 1 Open circuit
P2048 AdBlue dosing valve bank 1 Short to ground
P2049 AdBlue dosing valve bank 1 Short to B+
P204A AdBlue pressure sensor Electrical fault
P204B AdBlue pressure sensor Signal improbable
P204D AdBlue pressure sensor Short to B+
P204F AdBlue system (bank 1 ) Faulty operation
P205A AdBlue tank temperature Electrical fault
P205B AdBlue tank temperature Signal improbable
P205C AdBlue tank temperature Short to ground
P205C AdBlue tank temperature Short to ground
P206B AdBlue quality monitoring control unit Voltage out of range
P207F AdBlue Efficiency too low
P208A AdBlue delivery pump 1 actuation Open circuit
P208B AdBlue delivery pump 1 actuation Signal improbable
P208C AdBlue delivery pump 1 actuation Short to ground
P208D AdBlue delivery pump 1 actuation Short to B+
P208E AdBlue dosing valve bank 1 Component stuck closed
P20B7 AdBlue heating output stage Short to ground
P20B8 AdBlue heating output stage Short to B+
P20B9 Actuation of AdBlue heating 1 Open circuit
P20BB AdBlue tank heating 1 actuation Short to ground
P20BC Actuation of AdBlue heating 1 Short to B+
P20BC Actuation of AdBlue heating 1 Short to B+
P20BD AdBlue tank heating 2 actuation Open circuit
P20BF AdBlue tank heating 2 actuation Short to ground
P20BF AdBlue tank heating 2 actuation Short to ground
P20C0 AdBlue tank heating 2 actuation Short to B+
P20D8 Exhaust gas treatment/ secondary injection Control limit reached
P20E8 AdBlue Pressure too low
P20E9 AdBlue Pressure too high
P20EA AdBlue control unit main relay control Shutoff too early
P20EB AdBlue control unit main relay control Shutoff too late
P20EE SCR NOx catalytic converter bank 1 Efficiency too low
P20EE SCR NOx catalytic converter bank 1 Efficiency too low
P20EE SCR NOx catalytic converter bank 1 Efficiency too low
P20FA AdBlue supply pump 2 actuation Open circuit
P20FB AdBlue supply pump 2 actuation Mechanical fault
P20FC AdBlue supply pump 2 actuation Short to ground
P20FD AdBlue supply pump 2 actuation Short to B+
P20FE AdBlue dosing unit Faulty operation
P20FF AdBlue control unit Signal improbable
P214E AdBlue supply pump 1 Current too high
P214F AdBlue heating 1 Current too high
P21C5 AdBlue tank level sensor Component sticking
P21C7 AdBlue dosing system relay Electrical fault
P21C8 AdBlue dosing system relay Short to ground
P21C9 AdBlue dosing system relay Short to B+
P21CA AdBlue control unit Elect, power supply Error
P21CC AdBlue control unit Power supply short to positive
P21CC AdBlue control unit Power supply short to positive
P21CE AdBlue control unit Faulty operation
P21CE AdBlue control unit Faulty operation
P2200 NOx sensor 1 bank 1 Electrical fault
P2201 NOx sensor 1 bank 1 Signal improbable
P2202 NOx sensor 1 bank 1 Signal too small
P2203 NOx sensor 1 bank 1 Signal too large
P2209 NOx sensor 1 bank 1 heating Signal improbable
P220A NOx sensor 1 bank 1 power supply Electrical fault
P249C AdBlue system (bank 1) Maximum actuation time exceeded
U029D NOx sensor A Connection lost
U02A2 Communication with AdBlue quality monitoring control unit No communication
U059E NOx sensor A Message invalid
U05A3 Communication with AdBlue quality monitoring control unit Signal improbable
U1006 NOx sensor (bank 1) No communication
U1034 NOx sensor 1 bank 1 Signal improbable
U140C AdBlue control unit Under voltage
U140E AdBlue control unit Functional restriction due to undervolt.
U140F AdBlue control unit Functional restriction due to overvoltage