Circuit/System Verification
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify that DTCs P0106, P0107, P0236, P0237, P0238, P2227, P2228, P2229, or P2230, are not set.
- If any of the DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If none of the DTCs is set
- If any of the DTCs are set
- Verify none of the following conditions exist:
- The air intake duct system for loose connecting clamps, cracks, or other damage
- A damaged Q38 Throttle Body blade or shaft
- Splits, kinks, or improper connections at the vacuum hoses
- Faulty positive crankcase ventilation system operation
- Carbon deposits on the throttle blade.
- Vacuum leaks at the intake manifold, Q38 Throttle Body, Q17 Fuel Injector O-rings, and B111 Intake Manifold Pressure and Air Temperature Sensor.
- If a condition exist
Repair as necessary.
- Ignition ON.
- Verify the following scan tool parameters are within range of the Altitude vs. Barometric Pressure table. Refer to: Altitude Versus Barometric Pressure
table.
- BARO Sensor
- MAP Sensor
- Turbocharger Boost Sensor
- If a sensor parameter is not within range
Refer to the appropriate diagnostic below for further diagnosis.
- Barometric Pressure (BARO) Sensor. Refer to: DTC P2227-P2230
- Manifold Absolute Pressure (MAP) Sensor. Refer to: DTC P0106
- Turbocharger Boost Pressure Sensor. Refer to: DTC P0236
- If all sensor parameters are within range
- All OK