DTC P0069-00: Manifold Absolute Pressure - Barometric Pressure Correlation [12/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0069-00)
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to P0069-00 and other DTCs are output A P0069-00 is output B HINT:
If any DTCs other than P0069-00 are output, troubleshoot those DTCs first.
Result:
A
GO TO DTC CHART. Refer To DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ]
Result:
B
See step 2
- Read the DTCs.
- READ VALUE USING GTS (INTAKE MANIFOLD ABSOLUTE PRESSURE)
Pre-procedure1
- Turn the ignition switch off and wait for at least 50 minutes.
- Using the following table, determine the normal atmospheric pressure for the current altitude and temperature.
HINT:
- Standard atmospheric pressure is approximately 101 kPa(abs) [14.65 psi(abs)].
- For every 100 m (328 ft.) increase in altitude, atmospheric pressure drops by approximately 1 kPa (0.15 psi). This varies depending on the weather.
- Compare the value of the Data List item Intake Manifold Absolute Pressure with the actual atmospheric pressure.
Powertrain > Engine > Data List
Tester Display Intake Manifold Absolute Pressure Result
Result Proceed to Approximately the same as the actual atmospheric pressure A Not approximately the same as the actual atmospheric pressure B
Post-procedure1
- None.
Result:
B
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR. Refer to REMOVAL [12/2023 - ]
Result:
A
See step 3
- READ VALUE USING GTS (ATMOSPHERIC PRESSURE)
- Using the following table, determine the normal atmospheric pressure for the current altitude and temperature.
HINT:
- Standard atmospheric pressure is approximately 101 kPa(abs) [14.65 psi(abs)].
- For every 100 m (328 ft.) increase in altitude, atmospheric pressure drops by approximately 1 kPa (0.15 psi). This varies depending on the weather.
- Compare the value of the Data List item Atmospheric Pressure with the actual atmospheric pressure.
Powertrain > Engine > Data List
Tester Display Atmospheric Pressure Result
Result Proceed to Approximately the same as the actual atmospheric pressure A Not approximately the same as the actual atmospheric pressure B
Result:
A
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2023 - ]
Result:
B
REPLACE ECM. Refer to REMOVAL [12/2023 - ]
- Using the following table, determine the normal atmospheric pressure for the current altitude and temperature.