SOURCE: Toyota Avalon XLS, yr 2000, engine lights on
P0171 is a lean code. Open the hood, and locate the mass air flow sensor. Small black thingy in the intake tube between the air filter box and the engine, held in with 2 small screws. Remove the connector, remove the screws, and remove the sensor. Look into the sensor, you are going to see a couple of wires deep inside it. They will probabaly be "fuzzy" looking. Spray some brake cleaner on the wires until they are nice & clean. This will cure the P0171 code. Then check the air filter; replace it if it is dirty.
P1130 is an air-fuel sensor code, bank one, sensor one. More often than not, when we see this code, we replace the air-fuel sensor. Buy the replacement from you Toyota dealer, because the aftermarket sensors will not send the proper signal to the ECU, and you will be upset for having to buy a second sensor.
P0440 is a leak in the evaporative side of the fuel system; this looks after the fumes of the fuel in the tank. There are several reasons for seeing a P0440, like leaking vacuum lines, faulty fuel cap, rusty fuel filler tube at the cap, etc. This is kind of difficult to rectify without the proper equipment needed to diagnose what & where the actual leak is.
Hope this helps, please consider kind remarks regarding this solution. Thanks.
SOURCE: check engine light on;engine codes p0420 and p0773
I looked up the codes you posted.
P0420 is showing a bad oxygen sensor on bank #1, the one down by the catalytic converter.
P0773 is an electrical problem with the shift solenoid E.
A bad oxygen sensor would cause lower fuel milage.
SOURCE: The check engine light produced codes p1150 and
All cars sold in the US after 1995 use the same on board diagnotics called OBD-II. The codes are the same. Search OBM-II error codes and you'll get a listing.
P1150 Air/Fuel Sensor Circuit Range/Performance. (cylinder bank 1 Sensor 2)
P1150 may mean that one or more of the following has happened:
water or corrosion in the O2 sensor connector, loose terminals in the connector, wiring burnt on exhaust components, open or short in the wiring due to rubbing on engine components, holes in exhaust allowing unmetered oxygen into exhaust system, unmetered vacuum leak at the engine, bad O2 sensor or bad PCM.
P1155 Air/Fuel Sensor Heater Circuit. (cylinder bank 1 Sensor 2)
P1155 may mean that one or more of the following has happened: O2 Heater element resistance is high, Internal short or open in the heater element or O2 heater circuit wiring high resistance
Solution :Replace oxygen sensor and see if the problem goes away.
Testimonial: "Is there any way to be sure? Much more complete answer."
Whenever
this warning light or any other stays on in the dash it is indicating
that the systems control module (or the system sensor in the case of
lights like low oil pressure, door open indicators etc.) has detected
a fault, it then disables the system (this applies to ABS,TCS, TCM,
SRS and BCM faults and others) as long as the light is on. You must
now have the dealer hook up a special electronic diagnostic tool and
"scan" the system for the fault code that is stored for the
problem(s)
Legend of Abbreviations. ABS Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module
122 views
Usually answered in minutes!
×