HELP!! ODB2 Code P1153

[wth4ua]

I'm new to automotive forums so all advice and comments will be greatly appreciated.

My service engine soon light is on and I took it to AutoZone to get the Diagnostics scan done and it came back with this trouble code.

P1153, Insufficient Switching Bank 2 Sensor1

Has anyone else had this problem? And if so, is it a big deal and what could I do to fix it?

Also, this may or may not be involved with the P1153 trouble code but when I go to start the engine after it has been sitting for a while, it turns over like it wants to start but doesn't. I let off of the key and wait about a second and try it again and it starts right up. If it has been sitting for 15 minutes or so it will crank up the first time. I was thinking maybe the fuel pump or the fuel pressure regulator.

Thanks for the help!

[wth4ua]

I forgot to mention that this is for a 1999 Chevrolet Silverado Z71 Ext Cab, 89K miles, 5.3L V8

[99redsilverado]

O2 sensor...bank two is passenger side, sensor 1 is pre cat.....replace and code should clear

[99redsilverado]

as for the hard starting, sounds like a fuel pressure regulator goin bad, id replace

[wth4ua]

Originally Posted by 99redsilverado

as for the hard starting, sounds like a fuel pressure regulator goin bad, id replace

Thanks for the help. Have you ever replaced an O2 Sensor or pressure regulator? Is it difficult?

[99redsilverado]

i luckily have not had to do a regulator, but it should be pretty easy...go get your self a chiltons, or haynes repair manual itll help you out a good bit...the o2 sensor is as easy as unscrewing it from the exhaust, unplugging it and plugging new one in and screwing the new one in.....just dont forget to put some antiseize on the new threads.....

[wth4ua]

I appreciate the help. I'll let you know how the pressure regulator goes.

[99redsilverado]

anytime

[wth4ua]

Originally Posted by 99redsilverado

anytime

I replaced the O2 sensor with a Bosch Universal. The universal was $30 cheaper than the OE and basically the only difference is you have to take the connector off the bad sensor and tie it in with the universal sensor. Pretty simple procedure. The "service engine soon" light hasn't came back on so i'm happy. I'll go for the pressure regulator next.

[slacker_53]

Fuel pressure regulator is a piece of cake. Located midway above the left (driver's) side valve cover, it's a little larger around than a quarter and has one single vacuum hose attached to it. If you pull the vacuum hose and get raw fuel, the regulator is bad.

It's held on only by a clip, and has just the hose attached to it. Literally a two minute job.

-slacker

[99redsilverado]

good to know its working for ya wth4ua.

slacker--thanks for clearing that up...

[Hodally24]

Screw the new sensor, get a simulator. They are like 34 bucks each.

[99redsilverado]

Originally Posted by Hodally24

Screw the new sensor, get a simulator. They are like 34 bucks each.

and illegal

[wth4ua]

well, the fuel injector pressure regulator is good. Man, i am not looking forward to replacing the fuel pump. But my gas gauge honks up all the time (registers empty when i am completely full) so I guess I will correct that problem (sending unit) when i replace the fuel pump. So everyone tell me, is it easier to take the bed off to get to the gas tank or drop the tank and leave the bed on?

[jethro_3]

How much fuel is in the tank and how much does your friend/helper like laying on his back doing the "Hold up the tank?"