P0172 and P0175
#1
#2
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batroute (09-01-2014)
#3
I suspected that would be the case - I just thought I'd seen a warning from one of the techs on here that topping it up too much could affect the evap system. It's also started throwing engine failsafe/transmission fault/trac control - no P codes other than the 0172/5 - although my reader can't do C codes. Is it likely to be one cause for all this or not? Battery is good and alternator is putting out 14.1v at idle.
#4
I changed the air filter, cleaned the MAF(which was new 2 years ago),cleaned all TB plugs and put injector cleaner into the gas. Hard reset then took it for a 60 mile run - all smooth and no CEL. Then last night restricted performance and CEL. I've checked the fuel rail pressure - holds 40psi for over an hour after shutdown. Only code showing now is P0172 and freeze frame data shows:
Closed Loop
Coolant 190.4F
Fuel trims
B1LT -4.7
B2LT -0.8
B1ST -22.7
B2ST - 21.9
Vehicle speed 48.5mph
MAF 29.76gms/sec
Calc.load 43.5%
Engine rpm 1672
Intake air temp 100.4F
TPS 9.8%
Anybody know whether these figures point to a particular component.
Thanks!
Closed Loop
Coolant 190.4F
Fuel trims
B1LT -4.7
B2LT -0.8
B1ST -22.7
B2ST - 21.9
Vehicle speed 48.5mph
MAF 29.76gms/sec
Calc.load 43.5%
Engine rpm 1672
Intake air temp 100.4F
TPS 9.8%
Anybody know whether these figures point to a particular component.
Thanks!
#5
The P0172 & b175 are rich fuel codes and could be caused by many things. The fact that it is universal to both sides 172 & 175 would tell me it involves the air/fuel delivery so I would check the air intake for blockage or restrictions. I would also check all the throttle body plugs connections to be clean and tight and I would also add the MAFS to the list of plugs to check.
I have heard rumors of the over filling the tank but never experienced it. Also check your gas cap being installed properly.
This is a test for the MAFS that you may want to perform.
Link JagRepair.com - Jaguar Repair Information Resource
Link to Codes http://www.jagrepair.com/images/Auto...J27%201999.pdf
I have heard rumors of the over filling the tank but never experienced it. Also check your gas cap being installed properly.
This is a test for the MAFS that you may want to perform.
Link JagRepair.com - Jaguar Repair Information Resource
Link to Codes http://www.jagrepair.com/images/Auto...J27%201999.pdf
Last edited by Gus; 09-09-2014 at 02:58 PM. Reason: Added link to codes
The following users liked this post:
batroute (09-09-2014)
#6
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