Question about GMC Envoy XL
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0130 02 Sensor Circuit Malfunction (Bank I Sensor 1)
P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0171 System too Lean (Bank 1)
Check your Manifold Absolute Pressure Sensor, and it might be a good time to install a new Upstream O2 Sensor.
It might also be beneficial to have your fuel pressure checked if the engine is really running Lean, but this may be caused by a faulty O2 sensor.
I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514
Posted on Jul 19, 2010
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Posted on Jan 02, 2017
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