DTC P0299: Turbocharger Underboost Problem
- Inspect the air cleaner element (see
AIR CLEANER ELEMENT INSPECTION/REPLACEMENT
).
Is the air cleaner element clogged?
YES -Replace the air cleaner element (see AIR CLEANER ELEMENT INSPECTION/REPLACEMENT ), then go to step 18.
NO -Go to step 2.
- Check for leaks or damage at these parts.
- Intake air duct (turbocharger outlet pipe)
- Intake air duct (charge air cooler inlet hose)
- Intake air duct (charge air cooler outlet tube)
Are the parts OK?
YES -Go to step 3.
NO -Repair or replace the damaged parts, then go to step 18.
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Do the TURBOCHARGER BYPASS CONTROL SYSTEM TEST in the INSPECTION MENU with the HDS.
Is the result OK?
YES -Go to step 11.
NO -Go to step 6.
- Select TURBOCHARGER BYPASS CONTROL SOLENOID VALVE ON in the INSPECTION MENU with the HDS.
Do you hear the solenoid operating?
YES -Go to step 7.
NO -Replace the turbocharger bypass control solenoid valve (see TURBOCHARGER BYPASS CONTROL SOLENOID VALVE REPLACEMENT ), then go to step 18.
- Turn the ignition switch to LOCK (0).
- Remove the charge air cooler cover (see step 1 under CHARGE AIR COOLER REMOVAL AND INSTALLATION ).
- Check for poor connections, blockage, or damage at these parts.
- Hose (A) between the turbocharger bypass control solenoid valve and the turbocharger bypass control valve
- Hose (B) between the turbocharger bypass control solenoid valve and the turbocharger bypass control valve base
- Turbocharger bypass control valve base port (C)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Are the parts OK?
YES -Go to step 10.
NO -Repair or replace any damaged parts, then go to step 18.
- Inspect the turbocharger bypass control solenoid valve (see TURBOCHARGER BYPASS CONTROL SOLENOID VALVE INSPECTION
).
Is the solenoid valve OK?
YES -Inspect the turbocharger bypass control valve (see TURBOCHARGER BYPASS CONTROL VALVE REPLACEMENT ).
NO -Replace the turbocharger bypass control solenoid valve (see TURBOCHARGER BYPASS CONTROL SOLENOID VALVE REPLACEMENT ), then go to step 18.
- Do the TURBOCHARGER WASTEGATE CONTROL SYSTEM TEST in the INSPECTION MENU with the HDS.
Is the result OK?
YES -Go to step 12.
NO -Go to step 13.
- Check for clogging or damage in these parts:
- Turbocharger (see TURBOCHARGER AND EXHAUST MANIFOLD REMOVAL AND INSTALLATION )
- Warm up TWC (see WARM UP TWC REMOVAL/INSTALLATION )
- Under-floor TWC (see UNDER-FLOOR TWC REMOVAL/INSTALLATION )
- Exhaust pipe (see
EXHAUST PIPE AND MUFFLER REPLACEMENT
)
Are the parts OK?
YES -Intermittent failure, the system is OK at this time.
NO -Repair or replace any damaged parts, then go to step 18.
- Select TURBOCHARGER WASTEGATE CONTROL SOLENOID VALVE ON in the INSPECTION MENU with the HDS.
Do you hear the solenoid operating?
YES -Go to step 14.
NO -Replace the turbocharger wastegate control solenoid valve (see TURBOCHARGER WASTEGATE CONTROL SOLENOID VALVE REPLACEMENT ), then go to step 18.
- Turn the ignition switch to LOCK (0).
- Remove the charge air cooler (see REMOVAL ).
- Check for blockage or clogging at these parts:
- Hose (A) between the turbocharger wastegate control solenoid valve and intake air duct (turbocharger inlet connecting tube)
- Intake air duct (turbocharger inlet connecting tube) port (B)
NOTE: This view is from the rear of the engine compartment.Are the parts OK?
YES -Go to step 17.
NO -Repair or replace any damaged parts, then go to step 18.
- Inspect the turbocharger wastegate control solenoid valve (see TURBOCHARGER BYPASS CONTROL SOLENOID VALVE REPLACEMENT
).
Is the solenoid valve OK?
YES -Check the turbocharger (see TURBOCHARGER AND EXHAUST MANIFOLD REMOVAL AND INSTALLATION ) and turbocharger wastegate control actuator (see TURBOCHARGER CONTROL SYSTEM DIAGRAM ). Repair or replace any faulty parts, then go to step 18.
NO -Replace the turbocharger wastegate control solenoid valve (see TURBOCHARGER WASTEGATE CONTROL SOLENOID VALVE REPLACEMENT ), then go to step 18.
- Install the parts in the reverse order of removal.
- Turn the ignition switch to ON (II).
- Reset the PCM with the HDS.
- Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
- Start the engine. Hold the engine speed at 3, 000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.
- Test-drive under these conditions:
- Engine speed above 3, 800 RPM
- REL TP SENSOR above 59 deg
- Transmission in D
- Drive at least 4 seconds
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0299 indicated?
YES -Check the turbocharger bypass control solenoid valve, turbocharger wastegate control solenoid valve, and its connecting hose and port, then go to step 1.
NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC'S TROUBLESHOOTING .