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DTC P0106: BARO Circuit, Performance Problem: Condition

Powertrain Control Module (PCM) monitors barometric pressure by monitoring difference between intake manifold vacuum and atmospheric pressure at idle. PCM monitors atmospheric pressure at idle by using EGR boost sensor and by switching EGR boost sensor solenoid. DTC is set when barometric pressure variation is less than 1.33 in. Hg. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:

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