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rpmdiag, Tech and Instructor
Category: Car
Satisfied Customers: 7876
Experience:  Since 1975
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Customer complains that their 2007 Isuzu NPR stalls at idle

Customer Question

customer complains that their 2007 Isuzu NPR stalls at idle after engine is warm.
JA: Is the check engine light on? Does the car stall at idle or when driving?
Customer: scanned check engine light getting hard code P1593
JA: What is the model of your '07 Isuzu?
Customer: NPR
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: We just scanned it. do not know what code P1593 means.
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 2 months ago.
Category: Car
Expert:  rpmdiag replied 2 months ago.

Altitude Adoption Signal Outside Tolerance (AUDI, VOLKSWAGEN)
Intake Manifold Air Control Solenoid ECM Output Stage (BMW)
Speed Control Switch 1/2 Stuck (CHRYSLER, DODGE, JEEP)

These are the definitions for that code for different manufacturers. It doesn't show Isuzu, but I would use the 3rd one down and check scan data for diagnosing this.

Please understand that I don't know your skill level or tools you
have to assist us. Also understand that I can't see, smell, hear, or
touch the vehicle either, so your patience is appreciated. JA is a
great Q/A site, but it does not replace a repair shop. So please
don’t shoot the messenger if I have to deliver bad news:)
If you are satisfied with my answer, I would greatly appreciate a 5
star rating now and I will still assist you after you have rated me
too if another question pops up. I don’t get credit for helping you
until you rate me.
Thanks again, Ron

Expert:  rpmdiag replied 2 months ago.

Do you have any more questions for me at this time?

Thanks again, Ron

Customer: replied 2 months ago.
I'll follow thru on Monday.
Expert:  rpmdiag replied 2 months ago.

Okay, thanks again and please remember to rate me now and keep this link for future questions you may have.