Q: need help figuring out these values from code scanner live data

asked by on August 09, 2016

Car wont accelerate these are the code readings.

short term fuel trim bank 1 jumps from 0.0-4.7 LTFT 16-18. Stft bank two 5.5-8.0 LTFT 18-19.5. Ignition timing spark -0.5 to 2.5 maf 0.02lbs. Absolute throttle position idle is 20.0 WOT 32.0 car off throttle position goes to 75 when wot. Oxygen sensor 0.110 to 0.825. Oxygen sensor 2 0.310-815 stft sensor 2 99.2 steady oxygen sensor bank 2 0.070to 0.825 stft 0.8 to 3.1 oxygen sensor 2 bank 2 0.755 fuel pressure 65.5 evap system -0.17 load 43.5 throttle position 8.2 pedal position 19.2 to 29.4 command throttle actuator 12.9 please help my only car and it wont accelerate

My car has 140000 miles.
My car has an automatic transmission.

Although I cant fully diagnose this issue with the information provided, I can say that both of the O2 sensors that are after the catalytic converters, should be stable under normal conditions. Your engine load at idle seems higher than normal as well. There are a few things that can contribute to your concern. A certified technician, like one from YourMechanic, will be able to determine the exact cause of your acceleration issue.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I calculate the load carried ?
It’s easy to think that your car can carry pretty much whatever you can cram inside, but that’s not actually the case. Your car has a weight limit, and it’s probably not as high as you think. This limit includes...
Car burning oil.
The BMW manufacturer considers 1 quart per 750 miles for normal engines and up to 2.5 quarts on motor sport engines. Under heavy loads the engine will use more oil. This is what BMW says is normal. You should not...
I step on the gas it feels like it is forced to accelerate and the rpm's shoot up. The obd 2 scanner reads po700.
The code P0700 is for the transmission having a problem. I would recommend checking to make sure the fluid is full and not pouring in any additives until the problem is diagnosed. If the fluid is full and it does...
Injector clogged metal shavings
Hello there, having faults within the first 5000 miles is not uncommon. This is the time where any faults from the factory will show themselves. It is entirely possible that through the manufacturing process, a piece of metal worn off...
Charging system failure.
This may suggest a failing voltage regulator. The voltage regulator is a unit that regulates the charging of the battery (https://www.yourmechanic.com/services/battery-will-not-hold-a-charge-inspection) by the alternator. When the voltage regulator is not working properly, this may result in the alternator allowing too...
Nissan NV 400 hissing noise from servo when you push brake pedal lightly 2013 Nissan NV 1500
Hi there - yes, I believe you are correct. Sounds like the diaphragm in the booster has ruptured (https://www.yourmechanic.com/question/-why-is-newly-replaced-brake-booster-making-a-whistling-noise-and-brake-pedal-staying-depressed-by-chris), and is leaking air (to the engine), resulting in little or no brake pedal effort assist. I recommend a brake booster...
Camshaft position sensor keep failing after i replace it. after 2 miles the check engine comes back on for that sensor 2003 BMW 745Li
Hello - you don't mention the specific problem codes you are getting, but the problem you are having may not be the cam sensor itself (https://www.yourmechanic.com/question/car-is-running-fine-somewhat-but-have-p0345-code-cam-shaft-position-sensor-by-kerry-a). Rather, the problem could be the "v-shaped" timing chain guide between the cylinder banks....
Smoke from engine cooling fan
It's not unusual for a fan to fail, and you can probably get away with replacing just that. But since the fan seized, there may be a blown fuse or fusible link back in the system that will also have...
The break lights are working. Still stuck on park.
The shift interlock is controlled by the rear control module and besides brake switch there is also other inputs needed for the module to release the shifter. You will need to have the system computer scanned for codes and to...

Related articles

P0182 OBD-II Trouble Code: Fuel Temperature Sensor A Circuit Low Input
P0182 P0182 code definition Fuel Temperature Sensor 'A' Circuit Low Input What the P0182 code means P0182 is a generic OBD-II code indicating that the fuel temperature sensor 'A' circuit voltage fell below calibrated limit specifications during the self test....
B1377 OBD-II Trouble Code: Oil Change Lamp Circuit Failure
B1377 means there is a malfunction with the oil change lamp circuit, likely due to a defective oil change lamp bulb or circuit.
P0392 OBD-II Trouble Code: Camshaft Position Sensor "B" Circuit Low (Bank 2)
Trouble code P0392 means there is incorrect voltage or waveform from the camshaft position sensor circuit in engine bank 2.