Hi, my 2005 international 9900 with the isx started throwing the yellow check engine light and derating when the engine is cold, it comes and goes while its cold/warming up usually stays on for no more than a minute. It's fault code 187, sensor supply voltage to the cam position sensor, exhaust psi sensor, rail fuel psi sensor, egr position sensor & egr diff psi sensor. I've replaced quite a few exhaust pressure sensors and egr diff pressure where I use to work, but I've never seen this code before. I checked the connections and wiring at the sensors, I removed and cleaned up the exhaust pressure sensor(and made sure line going to exhaust manifold is clear). Just wondering if anyone else has expierance with this. I'm afraid the problem is gonna get worse fast. Id rather fix it myself even if that means changing a few unnecessary parts. I do have access to insite where I use to work if need be. Thank you!
isx fault code 187
Discussion in 'Trucks [ Eighteen Wheelers ]' started by rrw811, Feb 10, 2012.
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