28%20-%20DTC-Based%20Diagnostics/MODULE,%20Engine%20Control%20(ECM),%205. 9L/Diagnosis%20and%20Testing
P0299-BOOST IN RANGE LOW
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9022 - Test Plug
Originally Shipped In Kit Number(s) 8848, 8849, 8849CC.
For a complete wiring diagram Refer to the Wiring Information.
When Monitored:
While engine is running.
Set Condition:
The boost pressure is lower than the expected boost pressure based on engine operating conditions.
Possible Causes
OTHER DTC'S
INTAKE AIR SYSTEM RESTRICTION
TURBO CHARGER DAMAGED
INTAKE AIR SYSTEM LEAK
BOOST PRESSURE SENSOR
BOOST PRESSURE SENSOR
TURBOCHARGER
INTERMITTENT CONDITION
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
1. OTHER DTC'S
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1. Turn the ignition on.
2. With the scan tool, read the Engine DTC's.
Do you have other DTC's?
Yes
Repair other boost related DTC's first.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
No
Go To 2
2. INTAKE AIR SYSTEM RESTRICTION
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1. Inspect the air filter and intake air system for signs of restriction.
Were any restrictions found?
Yes
Replace the Air Filter or repair the Intake air system for restriction.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
No
Go To 3
3. TURBO CHARGER DAMAGED
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1. Disconnect the air cleaner connection to the turbo charger.
2. Using the service manual as a guide, visually inspect the turbo charger blades and turbo housing for signs of damage.
Was any damaged found?
Yes
Replace The Turbo charger.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
No
Go To 4
4. INTAKE AIR SYSTEM LEAK
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1. Using Test Plug 9022 , pressurize the intake air system and inspect for leakage.
2. Use the service manual as a guide.
Were any leaks detected?
Yes
Repair leaking intake air system.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
No
Go To 5
5. BOOST PRESSURE SENSOR
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1. Using the scan tool, compare the boost pressure sensor reading with the ambient air pressure sensor with the ignition turned on.
Are the boost pressure and ambient air pressure sensors within 6 in hg of each other?
Yes
Go To 6
No
Replace the Boost pressure sensor.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
6. BOOST PRESSURE SENSOR
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1. Turn the ignition off.
2. Install Test Plug 9022 .
3. Ignition on, engine not running.
4. Use the scan tool and compare boost pressure reading to the regulated air pressure for Test Plug 9022 .
NOTE: The reading on the boost pressure sensor may be slightly lower than the regulated pressure.
5. Does the boost pressure sensor reading increase with the regulated air pressure?
Does the boost pressure sensor reading increase with the regulated air pressure?
Yes
Go To 7
No
Replace the Boost Pressure sensor.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
7. TURBOCHARGER
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1. Disconnect the exhaust outlet connection.
2. Visually inspect the Wastegate flap in the turbocharger turbine housing
Is the Wastegate seized in the open position?
Yes
Replace the Turbocharger.
Perform POWERTRAIN VERIFICATION TEST (DIESEL). (Refer to 28 - DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure)
No
Test Complete.