2000 mazda mpv wont shift out of overdrive

Code 106 is for a problem with the signal coming from the MAP sensor, not the EGR valve. The MAP sensor and circuits would need to be checked.

Idle Charge Actuator Mechanical malfunction. May have a bad O2 sensor or actuator.

I think it may be an electrical issue but I think it's just a fuse. There are 2 fuses I would check. One of them is a 15 amp fuse inside the fuse panel inside the vehicle (see fuse layout below) and the other is a 40 amp fuse in the fuse panel under the hood of the vehicle in the engine compartment (see other picture below). I marked the fuses to check and hope this is the problem.

the temperature cooling sensor, The sensor's output is monitored by the engine computer to regulate various ignition, fuel and emission control functions, and to turn the radiator-cooling fan on and off as needed. check this first ! also check the fan relay in relay box. it may be sticking in the on position. hard to say without being there. but try the above things. good-day ! the fans come on if a/c is on.

Those are emissions codes

p0106 is barometric sensor code and is caused by a faulty egr boost sensor, egr boost sensor solinoid, or faulty vaccume line to either devise and last a bad pcm. check vaccume lines first then components, also there is a small filter on egr vac sol make sure its clean

check your brake light switch. Do your brake lights work?

YOU HAVE TO SEE WHAT TROUBLE CODE YOUR PCM IS TRYING TO GIVE YOU.GO TO ANY AUTO ZONE THEY WILL DO IT FREE.CHECK ENGINE LIGHT IS NOT GOING TO TURN OFF UNTIL YOU FIX THE PROBLEM.

p0106 means:
manifold absolute/barometric pressure out of range

which is something in the EGR circut. Could be as simple as a vacuum line or a clogged hose or valve.

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