check engine sign

[Zain]

last week my engine light turned on
after changing the mobile oil
it turned off
yesterday it turned on again
i took it to autozone
they scanned it and said its saying code 133
the list he gave me said
the probable cause
1 open or short circuit condition
2 poor electrical connection
3 engine mechanical fault
4 efi relay fault
5 faulty heated oxygen sensor - bank 1 sensor 1


can u guys help me with this
i have a 97 corolla
changed my manifoled with aftermarket headers and timming belt etc
i dnt know how i can fix this prob

[kevmac]

Originally Posted by Zain

last week my engine light turned on
after changing the mobile oil
it turned off
yesterday it turned on again
i took it to autozone
they scanned it and said its saying code 133
the list he gave me said
the probable cause
1 open or short circuit condition
2 poor electrical connection
3 engine mechanical fault
4 efi relay fault
5 faulty heated oxygen sensor - bank 1 sensor 1


can u guys help me with this
i have a 97 corolla
changed my manifoled with aftermarket headers and timming belt etc
i dnt know how i can fix this prob

[Zain]

soo its oxygen sensor prob
what can be the possible reason
n how to fix it

[Zain]

now it happened last time n it happened awhile ago
the lite turned off it self
now is there smthing loose or smthn

[Flashmn]

Change the sensor

[trife96]

Code is actually P0133

Oxygen Sensor Circuit Slow Response

Definition: Response time for the oxygen's sensor's voltage output to change from rich to lean or vise versa is 1 second or more during idle after the engine is at normal running temp.


This code is also related to P0125 which pertains to this oxy sensor and can not adjust the air/fuel mixture accordingly.

Most likey the sensor is bad