i05955263
Intake Manifold Air Pressure Is
High
This procedure covers the following diagnostic code:
Table 46
Diagnostic Trouble Codes for High Intake Manifold Air Pressure
J1939 Code
Description
Notes
1127-16 Engine Turbocharger 1 Boost Pressure : High - moderate
severity (2)
The Electronic Control Module (ECM) detects that the ac-
tual intake manifold air pressure is greater than the desired
intake manifold air pressure by 50 kPa (7.25 psi) for at
least 10 seconds.
If equipped, the warning lamp will flash. The engine will be
derated.
If the actual intake manifold pressure is within 25 kPa
(3.6 psi) of the desired intake manifold air pressure for at
least 11 minutes, the code will reset.
Probable Causes
• Air inlet and exhaust restrictions
• Turbocharger wastegate
• Wastegate regulator
Recommended Actions
Note: The procedures have been listed in order of
probability. Complete the procedures in order.
100 UENR0612
Symptom Troubleshooting
This document has been printed from SPI2. NOT FOR RESALE
To Next Page
Loading...
