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DTC P0299 [MZR-CD (RF Turbo)]

id0102f1830900

DTC P0299 | Turbocharger underboost condition
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DETECTION CONDITION | • The PCM monitors the intake boost pressure using the boost sensor signal. The PCM compares the intake boost pressure of target and actual. If the PCM detects that difference between target and actual intake boost pressure more than 60 kPa {450 mmHg, 17.7 inHg} for 9 s, the PCM determines that the underboost condition.
POSSIBLE CAUSE | • Boost sensor malfunction • Boost sensor improper installation • Turbocharger malfunction • VBC control improper operation • Air leakage in intake-air system • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available? | Yes | Perform the repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is DTC P0299 on FREEZE FRAME DATA? | Yes | Go to the next step.
No | Go to troubleshooting procedures for DTC in FREEZE FRAME DATA. (See DTC TABLE [MZR-CD (RF Turbo)].)
4 | INSPECT VBC SYSTEM OPERATION • Perform the Guide Blade Actuator Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR-CD (RF Turbo)].) • Does the guide blade operate properly? | Yes | Go to the next step.
No | Repair or replace malfunctioning part according to inspection results. Then go to Step 8.
5 | INSPECT INTAKE-AIR SYSTEM • Inspect the intake-air system for following points. - Boost sensor installation - Air leakage between turbocharger and intake manifold • Is there any malfunction? | Yes | Repair or replace malfunctioning part, then go to Step 8.
No | Go to the next step.
6 | INSPECT BOOST SENSOR • Inspect the boost sensor. (See BOOST SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is the boost sensor normal? | Yes | Go to the next step.
No | Replace the boost sensor, then go to Step 8.
7 | INSPECT TURBOCHARGER • Inspect the turbocharger. (See TURBOCHARGER INSPECTION [MZR-CD (RF Turbo)].) • Is the turbocharger normal? | Yes | Go to the next step.
No | Replace the turbocharger, then go to the next step. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
8 | VERIFY TROUBLESHOOTING OF DTC P0299 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the engine switch to ON position (engine off). • Clear the DTC from PCM memory using the WDS or equivalent. • Start the engine and drive the vehicle. • Is the same DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | DTC troubleshooting completed.