KC-477

1/31/22, 6:25 PM
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Assembled Camshaft - Injector Lobe Rotation
Inspection; P025700, P2A1700, Or P2A1F00,
Possible Lack Of Power – US17+OBD16 and Newer
Emissions
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Internal Content
This procedure should be performed if the following conditions
are present:
• Fault codes listed below are present on a DTC Readout:
P0257
Injection Pump Fuel Metering Control "B" Range/Performance
(Cam/Rotor/Injector)
P2A17
Injection Pump Fuel Metering Control "D" Range/Performance
(Cam/Rotor/Injector)
P2A1F
Injection Pump Fuel Metering Control "F" Range/Performance
(Cam/Rotor/Injector)
Inspection Steps
1. Rotate the engine with the turning tool in the normal direction of
rotation until the timing marks are aligned for the Injector Pump(s).
IMPORTANT
While the engine is being rotated, confirm each injector lobe is
rotating with the camshaft and DOES NOT SLIP.
; Live UI
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2. Once the timing marks are aligned for a specific Injector Pump,
verify the injector rocker roller is on the base circle of the injector
UIRefer to the illustration below.
; Live
lobe.
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If an injector lobe rotates on the camshaft, the rotation is normally by
60 degrees. It takes approximately 15 degrees of rotation before
potentially causing the faults codes listed previously or a fault for a
pumping
Tagsinjector during the Common Rail Fuel System Test.
k88992892
p2a17-00
p2a1f-00
NOTE:
An eServicep0257-00
is not required
for the repair.
Replace parts as
needed.
common rail
low power
p025700
p2a1700
p2a1f00
mack
volvo
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; Live UI
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