Did a full scan on my truck and got 3 codes. I have no idea what they are or what needs to be fixed. Any ideas? Also, do all the other random numbers look correct? Can any of you brainy types see any issues there? Truck is an 09 2.3 duratec automatic with 65k miles. Runs and drives great except for poor fuel mileage.

Code P1703 - brake switch out of self test range
Code P1650 - power steering pressure switch out of self test range
Code P1780 - transmission control switch (O/D cancel) circuit out of self test range

Fuel sys 1 - CL
Calc load - 21.5
ECT - 183f
STFT B1 % - -2.3 (bounces up and down slightly)
LTFT B1 % - 10.9 @ idle, 7.0 while driving @2500rpm
Map (in hg) - 7.0
Engine RPM - 853
Spark advance - 17
IAT temp - 89
Maf lb per min - 0.367
TPS % - 17.2
O2S B1 S 1 (V) - bounces from 0.070 - 0.750
O2S B1 S2 (V) - stays steady at 0.690
STFT B1 S1 (%) - -0.7
STFT B1 S2 % - NA
Command EGR % - 0
Command Evap% - 32.1
Fuel level - 23.1
Warm up DTC clr - 59
Clr distance mile - 297
Evap p (in H20) - 0.068
Baro (in hg) - 29.5
Cat te 11 - 799.8
Mis ena - yes
Fuel ena - yes
Ccm ena - yes
Mis cmpl - yes
Fuel cmpl - no
ccm cmpl - no
Cat ena - yes
Hcat ena - no
Evap ena - yes
Air ena - no
Acrf ena - no
O2s ena - yes
Hr ena - yes
Ecu volts - 14.222
Load value - 14.9%
Eq ratio - 0.999
Rel TPS - 0
Ambient temp - 73

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Those Codes are not "trouble" codes, they are self test codes, there are "tests" you can do as part of the diagnostics, you evidently entered "test mode" and then didn't do the tests, so no issues there

Nothing looks out of spec on the data
Baro(local air pressure outside) is part of MAF readings, there is no barometric pressure sensor so it is calculated from other sensor data
29.5" is normal for sea level to 1,000ft, you can get actual baro pressure from local airport data site, to see if it is accurate, within 1", if its more than 2" out then MAF could be the problem
Baro pressure changes daily, thats the "L's" and "H's" you see on weather maps, low and high outside air pressure

Switch MAF readings to grams per second(gs/sc, or gm/sc)

 

My 2 concerns were mainly the long term fuel trim, I read 10% is pretty high and also the post cat o2 sensor does not fluctuate and I thought it was suppose to just like the pre cat sensor?

Also for the hell of it I did your classic IAC valve test to check for vacuum leaks. Unplugged it while it was running. The engine didnt die but sputtered down to 450 rpms.

Maf in gm/sc is 2.77 if i did that right.
And barometer reading is currently 30hg in my area.

 

O2 Sensor 2 is after the Cat Converter and should be stable/steady .7-.8 is normal

MAF reads correct for idle in gm/sc, engine displacement(2.3l), at 500rpm, so 2.7gm/sc would be OK at 800-850rpm

So Baro is accurate, reads like MAF is fine

I wouldn't sweat the LTFT of +10 computer doesn't set a code until over +15 to +20 for LTFT

Could be Fuel pressure drops a bit, computer doesn't have a Fuel Pressure Sensor, all its calculation are based on 65psi at the injectors, but engine runs fine down to 50psi, you just get higher fuel trims as pressure drops

 

Awesome, thanks again ron!