Troubleshooting

Table 41
Diagnostic Trouble Codes for the Fuel Rail Pressure
J1939
Code
Description
Notes
157-0 Engine Injector Metering
Rail #1 Pressure : High -
most severe (3)
The Electronic Control Module (ECM) detects the following conditions:
The fuel rail pressure is greater than 179000 kPa (25962 psi) while the engine has been derated.
If equipped, the warning lamp will flash and the shutdown lamp will come on. The engine will be shut
down.
157-2 Engine Injector Metering
Rail #1 Pressure : Erratic,
Intermittent, or Incorrect
The ECM detects one of the following conditions:
The amount of fuel delivered by the high-pressure fuel pump is greater than 480 mL/min (16.3 oz/min)
for at least 2 seconds while the engine is at low idle.
If equipped, the warning lamp will flash. The engine will be derated.
157-16 Engine Injector Metering
Rail #1 Pressure : High -
moderate severity (2)
The ECM detects one of the following conditions:
The fuel rail pressure is greater than 170000 kPa (24657 psi) for at least 1 second.
OR
The measured fuel rail pressure is greater than the desired fuel rail pressure for at least 2 seconds.
OR
The fuel pressure remains too high after the keyswitch has been turned to the OFF position.
If equipped, the warning lamp will flash. The engine will be derated.
157-17 Engine Injector Metering
Rail #1 Pressure : Low -
least severe (1)
The ECM detects that the pressure in the fuel rail is low for at least 0.5 seconds. The point at which this
diagnostic code becomes active is a calculated parameter based on engine speed and engine
temperature.
If equipped, the warning lamp will come on. The engine will shut down.
157-18 Engine Injector Metering
Rail #1 Pressure : Low -
moderate severity (2)
The ECM detects that the measured fuel rail pressure is lower than the desired fuel rail pressure for the
current engine speed for at least 2 seconds.
If equipped, the warning lamp will flash. Active regeneration will be disabled. The engine will be derated.
The engine may shut down.
1239-0 Engine Fuel Leakage 1 :
High - most severe (3)
The ECM detects that the pressure in the fuel rail is too low compared to the volume of fuel that is being
supplied by the fuel injection pump.
If equipped, the warning lamp will flash and the shutdown lamp will come on. The engine will be
derated.
5571-2 High Pressure Common
Rail Fuel Pressure Relief
Valve : Erratic, Intermit-
tent, or Incorrect
The ECM detects that the fuel rail pressure is out of the expected range after the fuel Pressure Relief
Valve (PRV) has been opened.
This can either be high pressure (relief valve not fully open) or low pressure (fuel leak).
If equipped, the warning lamp will flash. The engine will be derated.
5571-7 High Pressure Common
Rail Fuel Pressure Relief
Valve : Not Responding
Properly
The PRV has been activated.
The PRV activation is caused by another active diagnostic code. Troubleshoot any other active diagnos-
tic codes. This diagnostic code will clear when the other fault has been rectified.
If equipped, the warning lamp will flash. The engine will shut down.
5571-10 High Pressure Common
Rail Fuel Pressure Relief
Valve : Abnormal Rate of
Change
The ECM detects that the volume of fuel being delivered is too low to open the PRV during a PRV test.
If equipped, the warning lamp will flash.
Troubleshoot any other diagnostic codes before attempting to test the PRV again.
(continued)
96 UENR0612-07
Symptom Troubleshooting
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