DTC P0299-77: Turbocharger/Supercharger "A" Underboost Condition - Commanded position not reachable: Action
- 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 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 charge air pressure sensor for blockage
- Check the vacuum system, turbocharger charge air shut-off valve and turbine intake shut-off valve operation. Perform pinpoint test A Vacuum Control System Tests
- 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 all stored DTCs and retest