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 DTCs and refer to relevant DTC index
- Check powertrain control module for fuel injection related DTCs and refer to relevant DTC 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 the relevant the relevant Fuel Charging and Controls article and perform pinpoint test A Vacuum Control System Tests
- 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, Exhaust Particulate Filter Soot Mass (0x061F). Please include this value in the Analytical Warranty System technician verbatim
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest