Accent LC (2000-05) :: Code P1128 - Long Term Fuel Trim Too Lean
I found on internet loads of comment about this error code, but in my case the only bad thing is with fuel consumption - about 9-10 litres (!) for 100 km on motorway. Normaly it should be about 6-8 litres.
The error means: "P1128 is "Long Term Fuel Trim Too Lean". Which means the air/fuel mixture is leaner than the HO2S can compensate for."
Idle is working correctly (i think thats to do with MAF), engine start without any problems and overall car running smooth.
What can cause a bad fuel consumption? Is anything to do with a lambda (O2) sensor or it could be something else?
Santa Fe (CM - 2007-12) :: 2008 - CEL On / Fuel Trim System Lean At Idle
I just got this 2008 santa fe a month ago from the dealer with 80.000 miles , and then yesterday the check engine light came on, i took it to auto zone and the put the computer and this 2 codes came up:
P2187
Fuel trim system lean at idle
explanation
the average long term fuel trim values at idle are more than 30% for 10 seconds
probable cause
- low fuel presure
- failed MAF sensor
- large vacuum leak
- cylinder misfire due to ignition system failure
P2189
System too lean at idle bank 2
explanation
failed MAF
probable cause
- low fuel presure
- vacuum leak on engine
- failed HO2S ( heated oxygen sensor-bank2 )
Lexus GX 2004-09 :: Long Term Fuel Trims Really High And P0430 Code
I got a P0430 code. My fuel trims are over 20% on both banks. A few days back I got a P0174 code but after disconnecting the battery it cleared and hasn't come back. Are these codes related in any way?
I'm a bit confused because I removed both cats and put O2 spacers in on both sides. I never get a P0420 code. Is one of the spacers not working correctly? I sent Toyota an email about the 430 code and they want to know which of the cats were removed - front or back. I didn't even there were front AND back ones! I thought there were just 2 side by side.
When I analyze the O2 readings on Torque they look pretty similar for both banks although I admit I'm not the best person to judge. Both rear O2 sensors are fairly new.
Unfortunately living in the middle of Africa I can't get hold of a smoke machine. I'd love to look for a vacuum leak, as from what I've read about the subject this might well be the cause of my problems.
One mechanic wants to put a new fuel pump in but I'd like to postpone that because it's a pricey item.
Ford F-150 (2004-2008) :: Rough Idle And Dying / System Adaptive Fuel Too Lean Bank 1
2004 f150 fx4 w/ 5.4 .I have a code that read " system adaptive fuel to lean bank 1 " and the same for bank two. So, I got on here and did some research. Cleaned the throttle body, maf sensor, air filter, looked for vacuum leaks, changed the fuel filter and it still is running very poor at idle and it seems to be getting progressively worse...
View 2 RepliesFord Fuel System :: 1988 - Got Code 41 - Lean Miss At Idle - ECM Or Injectors?
1988 F250 351 5.8
I've worked for months on this truck and I now have it in the shop. The truck shows a 41 code and has a lean miss at idle that get worse during acceleration and cruise. The injectors were refurbished 6 months ago and the ECM was replaced 3 months ago. All sensors are new and within specs. Fuel pressure is good and there are no vacuum leaks.
The mechanic has verified that the condition is not electrical related. The O2 sensor will react if carb cleaner is sprayed into the throttle but other wise shows constantly lean. He's now checking all pins at the computer for any off condition. He is suspicious of the refurbished injectors. I'm wondering if the computer somehow went out again. Which way to go or what/how next to test?
Prius (2004-09) :: Long Term Storage Of High Voltage Battery
I have an opportunity to get a high voltage battery from a salvage Prius. I don't need a replacement now but thought having an extra battery would be a good idea. How long can the battery be stored? Maybe switch them out every few months to keep both charged?
View 3 RepliesAccent LC (2000-05) :: Code P2096 Post Fuel Trim Too Lean
Car Throwing This Code ... P2096 Post Fuel Trim Too Lean-B1 ...
View 8 RepliesIS F (2008-2014) :: Headers And Long Term Reliability?
Headers will probably be the next mod that I do to my F, I have read a good bit about them on here, but no one really says anything about how they are doing long term ( any issues from heat on engine bay plastics after years of use) or how the coating holds up after years of use as track or DD or just anything else that seems to be an issue over time after being installed.
View 14 RepliesPrius (2010-12) :: Long Term Storage - 7 / 8 Months
Had to store prius for 7 or 8 months? Does the hybrid battery need to be disconnected?
View 4 RepliesSanta Fe (CM - 2007-12) :: 2008 - System Too Lean At Idle
I have a 2008 Santa fe with 68000 km, very high gas consumption. i checked the car computer.
1 - System too lean at idle (b1)
2 - System too lean at idle (b2)
The mechanic advice me to make some replacement and maintenance
1- Spark Plug Replacement
2- Change Fuel filter
3- change air filter
4- Injector cleaning
I have changed the spark plugs, still having high gas consumption.
Prius (2010-12) :: Bad For Long Term Health Of Hybrid Battery Trying To EV In The Last Mile Of Arriving Home?
Do you think it would shorten the life of the hybrid battery if I make a habit of really trying to EV in the last mile of arriving home?
Tonight, I accelerated quite slow after the last stop to stay on battery, but I noticed the battery bars got down to 2.
Got to wondering, if I do this a lot, might it shorten the traction battery life such that it fails at 11 yrs, for example, instead of 14 years?
Ford Fuel System :: Can Broken Dipstick Tube Cause Lean Codes?
It's really not relevant what brought up this question but do you think a broken dipstick tube can cause an engine to run lean and why do you answer that way?
View 3 RepliesFord Super Duty (1999-2016) :: Broken Exhaust Manifold Bolts - Long Term Fix?
I've got the dreaded broken exhaust manifold studs on my 2004 F250 V10. I don't drive it much (just 50,000 miles in 10 years) and confess I've ignored the hissing for quite a while. Is there really a permanent fix for these broken studs? Or should I expect to be replacing broken studs every 2 or 3 years?
If there is a permanent fix what is it? Special studs? Special manifold? I want to keep this truck a long time and don't want to be replacing these studs every few years.
Ford Super Duty (1999-2016) :: Long Term Negative Effects Of Heavy Condensation In Engine?
I only live 6 miles from work and I've been getting a lot of condensation gunk building up inside the filler cap and around the neck. Is there going to be any long term damage from this? Here is a picture of what I'm getting.
I know it's not coolant because I'm not loosing any and the oil on the dipstick is clean.
Since it got cold I've been taking another route to work that gets me up to 9 miles one way. Also, twice a week I take the long way home that has the engine running for a half hour but I'm still getting build up. In the winter I'm on call a lot and rarely go far from home so taking a two hour trip to really heat things up is probably not going to happen.
ETA. I change my oil every 3000 miles if that makes a difference.
Passat (B5) :: Check Engine Light Came On - Code P0171 / Fuel System For Bank 1 Was Too Lean
We have a 2003 Passat 1.8t. Had the Check engine Light come on. Went down to AutoZone and hookeded up the OBDII reader. Came up with P0171, Fuel System for Bank 1 was too lean. Probable causes:
1. Fuel Pressure of MAF (If Bank 1 & Bank 2 set codes together)
2. O2 Sensor
3. Ignition Misfire
4. Fuel Injector Problem
Car has 60K - has always run well. Wife says she thinks it's running a bit sluggish. I rarely drive the car, but I think she's right. Car is not missing or running rough.
I cleared the code & started the engine; Check Engine Light is off; then looked at the codes and I find a P0171 (Pending). She tells me that the light has been on before & then gone away. So I guess it clears itself, but eventually comes back.
Santa Fe (CM - 2007-12) :: Check Engine Light Going On - Fuel System Lean Codes P0171 And P2187
My wifes 2007 Santa Fe Limited 3.3 has had a check engine light going on a year now. Car has about 122k on it now. Scanned codes about 6 months ago and had a fuel system lean code. Did some reading and ended up replacing the purge valve. The CEL stayed off til the end of the drive cycle and came right back. I have noticed when you fill the car up there is a real strong smell of gas but the car always starts right up. It now has a P0171 Fuel system too lean (b1) and P2187 Fuel system too lean at idle. Where to start. Don't have much background with hyundai. Also the ESC off light comes on randomly and goes off. Doesn't happen real frequently though.
View 4 RepliesToyota - Corolla - Fuel-economy :: 2005 - P0171 Check Engine Code / System Too Lean
I have an 05 Toyota corolla, and have the check engine light on, I scanned it at autozone and error code is P0171 - System Too Lean (Bank 1). Which shows following possible causes: Faulty MAF, O2, fuel injectors blockage etc. On recommendation from the guy in autozone, I added fuel additive to clean the fuel line/ injectors. The check engine light went away for 9 months. But it is back on again. Tried putting in fuel additive again but the light remains on.
View 5 RepliesFord Aerostar :: Erratic Idle - Air / Fuel Ratio Is Too Lean Or Rich For PCM To Correct
97 shortie. 3.0 245,000 miles. I've already cleaned the throttle body and the idle air control valve. Throttle position sensor reads 5 volts, good ground, and a smooth voltage increase from idle to wide open throttle and back down. Which of these codes is most likely to cause erratic idle? Mostly in the morning.
P0340 Camshaft position sensor.
P1443 Evaporative purge flow sensor.
P0401 Insufficient EGR flow.
P0171 Air/fuel ratio is too lean or rich for PCM to correct.
I doubt it's number 1, and number 4 seems too general to be any use. I'm leaning toward number 3. Seems I read somewhere that the tube from the exhaust gets plugged up. This started when I disconnected a plug from the blue air bag box to get rid of that beeping. Coincidence?
Ford Fuel System :: 2003 F150 - Service Light Randomly Comes On / Code For Left Bank Running Lean
2003 f150 supercrew with 166,000 miles on it. Daily driver. Service light randomly comes on and when code reader was put to it shows "left bank running lean." Will clear it and will randomly come back on. Truck seems to be running fine. No issues engine. Bad sensor? Or bad injector? Maybe way to test?
View 1 Replies