SES light
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Freshman User
Joined: Sep 2006
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SES light
Ok i have too experienced a ses light it happend going up an extreme grade in CO with a 5th wheel. Both times it happend it was at about 15psi full pedal (teatering just where it wouldn't take it out of od). Pyro was still doing fine about 10 and a half. i checked the codes, came up with a 1211 i just replaced fuel filter 5000 ago will do again tomarow and did oil 5000 ago will do again tomarow. Is there anythign else i should check?
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Joined: Jun 2006
Posts: 5,497
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From: Central, Al
It can be here are all the possibilities
DTC P1209 and P1211 indicates that injection control pressure was above or below desired level under normal driving conditions.
Possible causes:
incorrect oil or viscosity
poor oil quality
gel fuel/no fuel
low fuel pressure
damaged IPR valve
high-pressure oil system leak
damaged high-pressure oil pump
damaged PCM
DTC P1209 and P1211 indicates that injection control pressure was above or below desired level under normal driving conditions.
Possible causes:
incorrect oil or viscosity
poor oil quality
gel fuel/no fuel
low fuel pressure
damaged IPR valve
high-pressure oil system leak
damaged high-pressure oil pump
damaged PCM
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