Exhaust Code questions
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Intermediate
Joined: Jul 2016
Posts: 37
Likes: 0
From: Manhattan
Exhaust Code questions
2015 Sportster 48
FuelPak
P0051
P0054
Are these contradictory?
Front pipe is blue
Rear pipe not
I tried to autotune but it kept telling me the engine was cold.
When I checked engine temp it said 361 (seems way too hot)
I changed the gasket in the rear. Still codes. MPG had DROPPED.
Anything I should be checking before I buy a new sensor?
Could the Fuelpak not be programmed correctly?
FuelPak
P0051
P0054
Are these contradictory?
Front pipe is blue
Rear pipe not
I tried to autotune but it kept telling me the engine was cold.
When I checked engine temp it said 361 (seems way too hot)
I changed the gasket in the rear. Still codes. MPG had DROPPED.
Anything I should be checking before I buy a new sensor?
Could the Fuelpak not be programmed correctly?
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
Not contradictory, both indicate some type of a problem with the rear O2 sensor.
MPG will drop because the ECM always thinks the motor is cold, adding more fuel as a result.
Possible causes:
MPG will drop because the ECM always thinks the motor is cold, adding more fuel as a result.
Possible causes:
- Damaged or disconnected electrical connector at the oxygen sensor
- Faulty O2 sensor
- Faulty or shorted wiring in the oxygen sensor circuit
- Vacuum leak on the engine
- Excessive exhaust leaks
- Faulty catalytic converter
- Faulty ECU (Engine Control Unit), in rare cases
Thread Starter
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Intermediate
Joined: Jul 2016
Posts: 37
Likes: 0
From: Manhattan
Exhaust Codes
I'll check the obvious stuff again, but I'm guessing I'll get a new sensor as they are not expensive. After that it's a trip to the dealer. I've never been. Have a professional look at it.
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