GM Service Manual Online
For 1990-2009 cars only

DTC P0107 Without RPO CTF

Circuit Description

The barometric pressure (BARO) sensor is part of the engine control module (ECM).

If the ECM detects a signal voltage that is excessively low voltage DTC P0107 will set. If the ECM detects a signal voltage that is excessively high DTC P0108 will set.

Conditions for Setting the DTC

    • The BARO sensor voltage is less than 1.9 volts.
    • The above condition is met for more than 1 second.

Action Taken When the DTC Sets

The ECM will operate the vehicle based on a BARO pressure of 100 kPa (14.5 psi).

Conditions for Clearing the DTC

    • A current DTC Last Test Failed clears when the diagnostic runs and passes.
    • Clear the DTC with a scan tool.

Step

Action

Yes

No

Schematic Reference: Engine Controls Schematics

1

Does the DTC set while the ignition is ON and the engine is running?

Go to Step 2

Go to Intermittent Conditions

2

Clear the DTCs.

Does The DTC reset?

Go to Step 3

Go to Step 5

3

Replace the ECM.

Did you complete the replacement?

Go to Step 4

--

4

Clear the DTCs.

Does the DTC reset?

Go to Step 2

Go to Step 5

5

Operate the vehicle.

Do any other DTCs set?

Go to Diagnostic Trouble Code (DTC) List

System OK