Diesel Engines Engine
NOTE: Do NOT perform automatic regeneration when the soot accumulation rate in the DPF
is 100 % or more, since this may cause damage to the filter or the engine.
• If the soot accumulation rate in the DPF reaches 140 % or more, the MIL also illuminates
and DTC P242F is stored in the PCM. In addition, the PCM further reduces the fuel
injection amount and hence the soot emission of the engine, resulting in a lower soot
amount accumulated in the filter. Here, a manual regeneration of the DPF must also be
performed.
• If the soot accumulation rate in the DPF reaches 200 %, the filter cannot be regenerated
anymore and must therefore be replaced.
• The different conditions of the soot accumulation in the DPF are shown in the following
table:
—
—
—
—
—
—
—
Illuminates
Perform manual
regeneration
(long mode)
Max. 150 km/h (93 mph)
——
P2458—
—
Perform auto
regeneration by
driving the vehicle at
an engine speed of
2,000 rpm or more
and a vehicle speed
of 40 km/h (22 mph)
or more for 10...15
min
Max. 70 km/h (43 mph)—
Soot accumulation in the DPF
DPF automatic
regeneration
MIL
Output restriction
P242F
Customer action
Flashes every 0.4 s
—
Enabled Disabled
DPF indicator light
DTC stored in PCM
—
—
—
Soot accumulation
rate
80% 100% 125%60% 140% 200%
Item
Dealer action
—
Illuminates
Replace the
DPF
Bring the vehicle to a dealer
—
Perform
manual
regeneration
(normal mode)
M6FL_01T013
01-74 Service Training Mazda6 Facelift
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