Codes P0171, P0174, and P1111
#1
Everything was fine but when I took my 2002 XKR out for a little spin today I got a restricted performance and P0171, P0174, and P1111 codes. I await the benevolent Jaguar Overloards to impart their wisdom. Thanks,
Mark
Everything was fine but when I took my 2002 XKR out for a little spin today I got a restricted performance and P0171, P0174, and P1111 codes. I await the benevolent Jaguar Overloards to impart their wisdom. Thanks,
Mark
MODS: sorry to repost this but for some reason my signature did not show in the first post
Mark
Everything was fine but when I took my 2002 XKR out for a little spin today I got a restricted performance and P0171, P0174, and P1111 codes. I await the benevolent Jaguar Overloards to impart their wisdom. Thanks,
Mark
MODS: sorry to repost this but for some reason my signature did not show in the first post
Last edited by Norri; 05-01-2014 at 10:16 PM.
#2
I'm no overlord but according to JTIS:
1111 - System check complete (this code should be there)
0171 - Bank 1 lean
0174 - Bank 2 lean
potential causes:
Intake leak
misfire
fuel filter clogged
fuel pressure regulator
low fuel pump output
HO2S wiring fault
Exhaust leak before catalyst
ECM receiving bad data from one of the following: ECTS, MAFS, TPS, IATS
Since this is the same failure on 2 different banks I would check the stuff in bold first as it would logically affect both banks. I would think the non-bold stuff would typically only affect one bank unless you had 2 simultaneous failures.
1111 - System check complete (this code should be there)
0171 - Bank 1 lean
0174 - Bank 2 lean
potential causes:
Intake leak
misfire
fuel filter clogged
fuel pressure regulator
low fuel pump output
HO2S wiring fault
Exhaust leak before catalyst
ECM receiving bad data from one of the following: ECTS, MAFS, TPS, IATS
Since this is the same failure on 2 different banks I would check the stuff in bold first as it would logically affect both banks. I would think the non-bold stuff would typically only affect one bank unless you had 2 simultaneous failures.
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mjlaris (05-02-2014)
#3
I had both fuel pumps fail a little over a month ago and they were replaced by the Jaguar dealer in Jackson, MS. I also had the s/c inlet and outlet ports bored out about 10 months ago but have only driven is perhaps 1500 miles since the s/c work. I guess either of these could be the cause.
Mark
Mark
#4
The following users liked this post:
mjlaris (05-02-2014)
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