Page 920 - Workshop Manual - Tunland (2017)

04-234 DIAGNOSTICS - ENGINE CONTROL SYSTEM

04 DTC inspection
DTC DTC definition Trouble location
conditions

• Postprocessing
DOC inlet
temperature sensor
Postprocessing 1
• Postprocessing
diesel oxidation
DOC oxidation
converter inlet catalyst
temperature - data is
P3251 • Postprocessing
valid but above DPF temperature
normal operating
sensor module and
range - medium
its harness
severity level
• Postprocessing
system
• ECM
• When the engine is • Postprocessing
running and the
DOC inlet
Postprocessing diesel postprocessing temperature sensor
particulate filter inlet diesel particulate • Postprocessing
temperature - data is filter is under active DPF temperature
P3253 valid but above regeneration, the sensor module and
normal operating diagnosis continues its harness
range - lowest to run.
• Postprocessing
medium severity level
system
• ECM
• Postprocessing
DOC inlet
Postprocessing diesel temperature sensor
particulate filter inlet
• Postprocessing
temperature - data is
DPF temperature
P3254 valid but above
sensor module and
normal operating
its harness
range - lowest • Postprocessing
severity level
system
• ECM

Diagnosis Procedure