1999 Lexus ES 300 computer engine issue -P1153

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

nospam - 09 Jul 2007 02:51 GMT

My neighbor did a test on my Lexus due to a check engine light on that just
came on. It came back with a P1153 code as being an issue. He was real busy
and would have to look more into it later. I was wondering if someone else
had this issue and what I should be checking for specifically?

What I do know is it is referring to:
P1153 Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 2 Sensor 1)

He was thinking it also had something to do with ...

"the 1153 is probably related to the P1150 O2 sensors."

Any additional feedback would be appreciated.

Bryan

Reply to this Message

Ray O - 10 Jul 2007 03:39 GMT

> My neighbor did a test on my Lexus due to a check engine light on that
> just came on. It came back with a P1153 code as being an issue. He was
[quoted text clipped - 12 lines]
>
> Bryan

IIRC, some vehicles with California emissions use air/fuel ratio sensors
instead of O2 sensors and have a different diagnostic trouble code (DTC)
than O2 sensors. I believe that your car is one of those vehicles, and the
procedure for testing them is pretty much the same as checking an O2 sensor.
When the engine and sensor are fully warmed up, look for a varying voltage
signal from the sensor. If voltage does not vary or is non-existent, the
sensor is probably bad.

Signature

Ray O
(correct punctuation to reply)

Reply to this Message

satmech - 16 Jul 2007 06:12 GMT

>> My neighbor did a test on my Lexus due to a check engine light on that
>> just came on. It came back with a P1153 code as being an issue. He was
[quoted text clipped - 20 lines]
> signal from the sensor. If voltage does not vary or is non-existent, the
> sensor is probably bad.

A/F sensors are 'biased' and quicker, but you need a scan tool to check
them (Data List function). If the wires are continuous and not shorted to
+ or - or each other, then all that's left is ECU or sensor. CHECK
(CONT/SHORT) WIRES WITH COMPONENTS DISCONNECTED AND USE A METER.

It's probably the sensor....

Reply to this Message