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DTC P0106: Barometric Pressure Out Of Range: Testing

  1. Turn the ignition on. With the DRBIII(R), read MAP sensor voltage. Is the voltage less than 2.2 volts? If yes, go to next step. If no, go to step  11 .
  2. Turn the ignition off. Disconnect the MAP sensor harness connector. Is the voltage 4.5-5.2 volts? If yes, go to next step. If no, go to step  7 .
  3. Turn the ignition on. With the DRBIII(R), monitor MAP sensor voltage. Is the voltage more than 2.2 volts? If yes, replace MAP sensor. If no, go to next step.
  4. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance of the MAP sensor signal circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance less than 5.0 ohms? If yes, go to next step. If no, repair the MAP sensor signal circuit for an open.
  5. Measure the resistance between ground and the MAP sensor signal circuit in the MAP sensor harness connector. Is the resistance less than 100 ohms? If yes, repair MAP sensor signal circuit for short to ground. If no, go to next step.
  6. There are no possible causes remaining, replace PCM.
  7. Turn the ignition on. Measure the voltage on the 5-volt supply circuit in the MAP sensor harness connector. Is the voltage more than 5.2 volts? If yes, repair the 5-volt supply circuit for a short to battery voltage. If no, go to next step.
  8. Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance between ground and the MAP sensor 5-volt supply circuit in the MAP sensor harness connector. Is the resistance less than 100 ohms? If yes, repair MAP sensor 5-volt supply circuit for short to ground. If no, go to next step.
  9. Measure the resistance of the MAP sensor 5-volt supply circuit between the MAP sensor harness connector and the PCM harness connector. Is the resistance less than 5.0 ohms? If yes, go to next step. If no, repair the MAP sensor 5-volt supply circuit for an open.
  10. There are no possible causes remaining, replace PCM.
    11. WARNING: When the engine is operating, DO NOT stand in a direct line with the fan. DO NOT put your hands near the pulleys, belts or fan. DO NOT wear loose clothing.
  11. Conditions that set DTC are not present at this time. The following list may help in identifying the intermittent condition:
    • With the engine running at normal operating temperature, monitor the DRBIII(R) parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set.
    • Review the DRBIII(R) Freeze Frame information to identify under what conditions the DTC set.
    • Refer to any Technical Service Bulletin (TSB) that may apply.
    • Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
    • Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

    Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

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