Volvo Engine D11L (Tier 4) Fault Code: P029900 PID: PSID 98 FMI: 1 Turbocharger/Supercharger Underboost – No Sub Type Information
CONTROL UNIT:
Engine ECU
FAILURE EVENT:
The boost pressure in the inlet manifold is below calculated value -45kpa(-6.5psi).
SYMPTOM:
Engine has low power because of low inlet manifold (boost) pressure.
CONDITIONS:
1. Engine speed between 800 rpm and 1800 rpm.
2. Engine torque between 400 Nm and 2400 Nm.
3. Inlet manifold temperature between 10?C (50?F) and 100?C (212?F).
4. Ambient air pressure below 200 kPa (29.0 psi).
5. Engine running with no changes in speed or torque.
INHIBITING THE DTC:
1. P009501 / MID128 PID105 FMI12 / SE2507-12
2. P009511 / MID128 PID105 FMI4 / SE2507-4
3. P009513 / MID128 PID105 FMI5 / SE2507-5
4. P010501 / MID128 PID102 FMI12 / SE2508-12
5. P010512 / MID128 PID102 FMI3 / SE2508-3
6. P010513 / MID128 PID102 FMI5 / SE2508-5
7. P02E011 / MID128 PSID7 FMI4 / MO2503-4
8. P02E012 / MID128 PSID7 FMI3 / MO2503-3
9. P02E013 / MID128 PSID7 FMI5 / MO2503-5
10. P02E612 / MID128 PID51 FMI3 / MO2503-3
11. P02E613 / MID128 PID51 FMI5 / MO2503-5
12. P033531 / MID128 SID22 FMI9 / SE2701-9
13. P033538 / MID128 SID22 FMI8 / SE2701-8
14. P040311 / MID128 SID146 FMI3 / PWM2503-3
15. P040313 / MID128 SID146 FMI5 / PWM2503-5
16. U300001 / MID128 PID158 FMI5 / EF2104-5
POSSIBLE CAUSES:
1. Defective wastegate (blocked).
2. Faulty EGR valve position.
3. Defective turbocharger.
4. Leakage in intake system.
5. Leakage in exhaust system.
6. Inlet manifold pressure sensor biased low.
7. Inlet manifold pressure too low.
8. Defective inlet manifold pressure sensor.
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