Captiva

DTC P2263 - LNP or LNQ

The turbocharger pressure sensor responds to pressure changes in the inlet manifold. The pressure changes occur based on the engine load, and turbocharger boost. The engine control module (ECM) supplies 5 V to the turbocharger pressure sensor on the 5 V reference circuit. The ECM provides an ground on the low reference circuit. The turbocharger pressure sensor provides a signal to the ECM on the signal circuit which is relative to the pressure changes in the manifold.

The actual turbocharger boost pressure is out of the desired range for greater than 200 s.

DTC P2263 00 is a Type C DTC.

DTC P2263 00 is a Type C DTC.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EN 23738-A Mityvac

For equivalent regional tools, refer to Special Tools .

1. Ignition ON, compare the scan tool boost pressure sensor parameter to the barometric pressure sensor parameter. Both parameters should be within 5 kPa (0.73 PSI).

⇒	If not within the specified range, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

2. Observe the DTC information with a scan tool. Verify that DTCs P0045 00, P0047 00, or P0048 00 are not set.

⇒	If any of the DTCs are set, refer to DTC P0045, P0047, or P0048 : LNP or LNQ for further diagnosis.

3. Engine running, increase the engine speed to 2 000 RPM. Command the turbocharger boost solenoid from ON and OFF with a scan tool. Verify the scan tool Boost Pressure Sensor parameter increases and decreases with the scan tool commands.
4. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Inspect the fuel tank for the right fuel content.
2. Inspect the inlet, and the exhaust systems, for the following:

•	Leaks or restrictions

•	Damaged or missing components

•	Aftermarket components

⇒	If a condition is found, repair as necessary.

3. Disconnect the vacuum source from the Q41 Turbocharger Vane Position Control Solenoid Valve
4. Connect the EN 23738-A mityvac to the Q41 Turbocharger Vane Position Control Solenoid Valve vacuum supply hose. Engine running, verify the vacuum is greater than -50 kPa (-7.25 PSI).

⇒	If less than the specified range, inspect the vacuum supply hose and filter for a leak or restriction. If the supply hose is normal, replace the vacuum pump.

5. Connect the vacuum source to the Q41 Turbocharger Vane Position Control Solenoid Valve. Connect the EN 23738-A mityvac to the Q41 Turbocharger Vane Position Control Solenoid Valve vacuum port. Engine running, command the Turbocharger Vane Position to 5% with a scan tool. Verify the vacuum is less than -40 kPa (-5.8 PSI).

⇒	If greater than the specified range, replace the Q41 Turbocharger Vane Position Control Solenoid Valve.

6. Command the Turbocharger Vane Position to 95% with a scan tool. Verify the vacuum is greater than -50 kPa (-7.25 PSI).

⇒	If less than the specified range, replace the Q41 Turbocharger Vane Position Control Solenoid Valve.

7. Connect the EN 23738-A mityvac to the turbocharger vane position control vacuum actuator. Apply -50 kPa (-7.25 PSI) vacuum to the turbocharger vane position control vacuum actuator. Verify the Turbocharger Vane Position Sensor parameter is greater than 70%.

⇒	If less than the specified range, replace the turbocharger vane position control vacuum actuator.

8. Inspect the turbocharger oil supply lines for a restriction.

⇒	If restricted, repair or replace as necessary.

9. If all other components test normal, replace the turbocharger.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.