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Ron, ASE Certified Technician
Category: BMW
Satisfied Customers: 35527
Experience:  34 years Fixing Cars and Trucks
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Have a p1627 dtc and p2097. Checked map sensor ref volts and

Customer Question

Have a p1627 dtc and p2097. Checked map sensor ref volts and signal volts high and low vaccum.
5 ref volts and 1.8 volts - 4 volts signal. The scope reads 0-.9 volts pre cat o2 sensor and .8v steady reading on post cat o2.
Submitted: 1 year ago.
Category: BMW
Expert:  Ron replied 1 year ago.

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

Theses codes can be set by any of the following,

  • Manifold Absolute Pressure (MAP) Sensor
  • Oxygen Sensor
  • Defective Wiring

    In order to determine the cause you are going to need to do some testing, I have enclosed the steps in the link below.