DTC P0299-77 Turbocharger/Supercharger "A" Underboost Condition - Commanded position not reachable: Action
WARNING: This page is about a different variant/trim than selected.
- Check powertrain control module for related Diagnostic Trouble Code(s) and refer to relevant Diagnostic Trouble Code(s) index
- Check powertrain control module for fuel injection related Diagnostic Trouble Code(s) and refer to relevant Diagnostic Trouble Code(s) index
- Check exhaust system for mechanical integrity
- Check and correct the engine oil level
- Check air induction system/turbocharger for failure relating to reduced charged air conditions
- Check air induction system for leakage
- Check air induction system for excessive oil
- Check the vacuum system, turbocharger charge air shut-off valve and turbine intake shut-off valve operation. Refer to FUEL CHARGING AND CONTROLS - TDV6 3.0L DIESEL (G1551116) and perform pinpoint test A Vacuum Control System Tests For additional information, Refer to: TURBOCHARGER .
- Check charge air pressure sensor for blockage
- Check turbocharger system/vanes for mechanical integrity
- Using the Jaguar Land Rover approved diagnostic equipment, check and record value of datalogger signal, Diesel Particulate Filter Soot Concentration (0x042C). Please include this value in the Analytical Warranty System technician verbatim
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and retest