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Old 07-31-2015, 10:08 AM
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P-1297 what should I do

I'm bringing my 2014 JGC diesel into Jeep for a state inspection next week and it has had 2 instances of the error code p-1297. In both cases the check engine light reset itself. The google search gave me this for the code-
P1297 Chrysler - No Change In MAP Sensor Voltage

Possible causes
- Faulty MAP Sensor
- Restricted MAP Sensor
- MAP Sensor harness is open or shorted
- MAP Sensor circuit poor electrical connection
- Faulty ECM

What should I expect from jeep service at this point? What does this fault code indicate, a larger problem or a transitory annoyance?

PS- After postings this I was driving and got a new mil and p-1297 code.

2014 3.0L Diesel Quadra-Trac II Granite Crystal Metallic
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Old 08-02-2015, 12:23 AM
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Re: P-1297 what should I do

Originally Posted by dieseljimmy View Post

Just curious see if it is a code P1297. I have had this before, ONLY once since the SCR replacement in Jan. It clears itself fairly quickly, within a day or two. When I had an oil change last month the dealer applied Service Bulletin 18-023-15 Rev. and it hasn't come back. That PCM patch covered a multitude of mil codes.

FWIW P1297 indicates EGR SLOW RESPONSE-DECREASING FLOW. The ECM is sensing the EGR flow is less than the requested flow. It is possibly caused by air filter blockage, air restriction (air intake, crankcase vent or turbo related tubes...restrictions, damaged or poor connections), air leakage(dealer has a smoke machine that introduces smoke via the Inlet Pressure Sensor port...after removing the I.P.S. and visually looking for escaping smoke), checking the EGR Cooler and Tubes for excessive carbon buildup, damage, leaks......anything the prevents or restricts proper exhaust gas flow. If everything so far is negative: Replace the EGR Valve. Hopefully yours was a software bug like mine. Good Luck.
I posted this in echo7tangos thread on p20ee again and again etc. Be aware when you do a search for Chrysler p1297 and you came up with a map sensor response, I think that refers to gas engines(I believe). If this belief is wrong I apologize in advance. The Chrysler code p1297 relating to a diesel is a different problem.

However the above diesel p1297 info is correct. Also note after the pcm software update the code never came back. Good luck.
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