engine light and codes

[2olforthis]

Searched but didn't find a definitive answer about trouble codes I'm getting from an Autozone diagnostic read. Codes p1133 and p1135 both came up twice (the reader detected 4 codes). I know these are connected to the Air/Fuel sensors. My 99 has three to my knowledge - one forward and two below the exhaust manifold. I'd prefer not to replace them all if I don't have to but I'm not sure if there is a less technical way to tell which one is bad (beyond the dealer). Anyone have any experience? Are there ones that tend to go first? Any help would be great. Thanks.

[camry-4-ever]

What year and engine?

[freeyellow2000]

Sorry to hijack ur thread but I been getting 2 codes P0440 (EVAP Emission Control) .. contsantly. (show up twice on the reader) Im not sure if it is the gas cap. For example, I gas up my car and 4 miles later it CEL goes on.... i reset it............. 1/2 tank later i get the same code.......reset it ............ near empty it goes off again...... I made sure the gas cap was tight as i hear click lock when i gas up in the first place...


I don't know if it will help, but the CEL goes off around 2000 rpm from what i seen so far

once when i increasing speed....the engine rev up to 2000 rpm and it when off
once at highway ......... (dunno when exactly at what speed/rpm when if when off)



kind of scared to take it in for a TEST only smog check .... since Im required to do so for my DMV registration(TEST ONLY SMOG CHECK are cars likely to fail the smog check according to CA DMV paperwork and it chosed at random according to what my friends in case u didn't know)


FYI CALI REQUIRED CARS TO BE DYNO as the smog check test is in progress

I read somewhere that i need to drive the car for about 50 prior to the smog check , is this true?


I don't want to fail the smog check just because of CEL light when off. My friend Windstar failed the smog check just becase of CEL was on... it passed all the test (car had 157,000 miles at the time).

The Hayes manual doesn't mention any really about the po440 error,


HELP


97 Camry LE I4 the car was only 47K miles and im the 2nd owner.

[Toysrme]

p1133 - Heated o2 sensor circuit slow response (Bank 1 Sensor 1 i.e. rear)
Responce time for the heated oxygen sensor's voltage output to change from rich to lean, or from lean to rich, is 1 sec. or more during idling after the engine is warmed up. (2 trip logic)
p1135 - Heated Oxygen sensor Heater Circuit malfunction (Bank 1 sensor 1 i.e. rear)
When the heater operates, heater current exceeds 2 A or voltage drop for the heater circuit exceeds 5v. (2 trip logic)
And/Or
Heater current of 0.25 A or less when the heater operates. (2 trip detection logic)

Replace the sensor.



Are the other two codes coolant temp sensor related?