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Tim Mohr
Tim Mohr, ASE MASTER TECH
Category: Dodge
Satisfied Customers: 15121
Experience:  30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
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KEEPS SETTING CODE PO1275, WE CAN CLEAR BUT COMES RIGHT BACK

Customer Question

KEEPS SETTING CODE PO1275
JA: Just to clarify, what's the exact code? And have you tried to reset it?
Customer: WE CAN CLEAR BUT COMES RIGHT BACK WHEN YOU TURN ON THE AC
JA: What is the model/year of your Dodge?
Customer: 2102 DODGE 2500 4X4 TURBO DIESEL
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: YES. WE HAVE COMMANDED THE AC CLUTCH WITH A SCANTOOL WITH THE VEHICLE KOEO AND FOUND THE CLUTCH TO BE OPERATING. AFTER STARTING THE VEHICLE THE CODE COMES BACK AND CLUTCH NO LONGER CAN BE CONTROLLED WITH SCAN TOOL
JA: Anything else you think the mechanic should know?
Customer: WAS ABLE TO COMMAND AC ON WHILE VEHICLE WAS RUNNING ONCE. INSTALLED GAUGES TO CHECK PRESSURES AND CAN NO LONGER COMMAND IT ON WHILE RUNNING.
Submitted: 3 months ago.
Category: Dodge
Expert:  Tim Mohr replied 3 months ago.

Hi, my name is ***** ***** is almost always caused by a compressor clutch drawing too many amps, ans is a common epai, have you checked the amp draw from the clutch yet?

Customer: replied 3 months ago.
no we have not
Expert:  Tim Mohr replied 3 months ago.

check the draw from the clutch, it should only draw 3 or 4 amps, if it is higher, then replace the clutch, like I said, we do alot of them for this code,Tim

Customer: replied 3 months ago.
we can toggle the clutch with the vehicle not running. is that normal for this issue?
Expert:  Tim Mohr replied 3 months ago.

Yes, if the clutch is not spinning, it will not draw the amps like when its engaged and spinning,Tim

Customer: replied 3 months ago.
okay, makes sense. we will check amp draw. but you are fairly confident it will need a clutch?
Expert:  Tim Mohr replied 3 months ago.

Yes, the only other thing it could be is the compressor clutch relay, but 99% of the time, its the clutch, but the amp reading will verify this,Tim

Expert:  Tim Mohr replied 3 months ago.

Please dont forget to rate me so I can get credit for helping, you can come back to this question at anytime after rating and ask follow up questions at no charge, thanks,Tim

Expert:  Tim Mohr replied 3 months ago.

Is there a reason you wont rate me? I do not get paid unless you do?

Customer: replied 3 months ago.
hi tim. we can no longer command the a/c clutch. vehicle running or not. code P1275
Customer: replied 3 months ago.
code comes back whether vehicle is started or not.
Customer: replied 3 months ago.
because we can no longer command it on we were unable to do an amp draw test.
Customer: replied 3 months ago.
we will gladly rate your service once we've found the problem.
Expert:  Tim Mohr replied 3 months ago.

run a power wire to the clutch and measure the amps on it,Tim

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