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Getting P0133 and P0153 codes

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33K views 21 replies 10 participants last post by  ChevyKiller  
#1 ·
About 2 weeks ago, my car threw a P0133 code: Oxygen Sensor Circuit Slow Response (Bank1, Sensor1). And then every couple days since, it has done it again. And now the last couple days, it has also thrown P0135: Oxygen Sensor Circuit Slow Response (Bank2, Sensor1). So, I'm seeing the exact same issue for both the driver's side and the passenger side.

These codes involve the front oxygen sensor on the driver's side (P0133) and the passenger's side (P0135). This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use. Codes P0133 and P0153 may mean that one or more of the following has happened:

- The oxygen sensor is faulty
- The wiring to the sensor is broken / frayed
- There is an exhaust leak

I also found this info on the web:

Possible Solutions

The simplest thing to do is to reset the code and see if it comes back.

If the code comes back, the problem is more than likely the front passenger's side oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:

- Check and fix any exhaust leaks
- Check for wiring problems (shorted, frayed wires)
- Check the frequency and amplitude of the oxygen sensor (advanced)
- Check for a deteriorating / contaminated oxygen sensor, replace if necessary
- Check for inlet air leaks
- Check the MAF sensor for proper operation
Since it originally started on the driver's side only, it could have been any of those. Now that it is on both sides, it would be highly unlikely to be an exhaust leak, wiring problem, or a bad O2 sensor. So, I'm thinking that it is more likely either an inlet air leak or a MAF sensor issue.

What thoughts do you guys have? Any suggestions as to my next step?
 
#5 ·
I had the same problem. Since the banks are further away from the engine with LTs it was taking too long for them to warm up and going into open loop before they could warm up properly. My tuner extended the loop time and I havent had a problem since. Funny thing is it ran ok for a while with the LTs and then one day kapoot. Hope this helps
 
#6 ·
I just talked to Adam and he said he adjusted the tune to compensate for the new O2 placement in the headers.

Since this has been happening on and off for a couple weeks, I'm not sure if "bad gas" could be it. I've been through a couple tanks, and I also ran 10 gallons of race gas through the car last weekend. But it happened before and after that.

I may stop by a Ford dealer this afternoon and pick up two new sensors just to try them out. Anyone have an idea what they cost?
 
#11 ·
I have a bad 02 sensor as well but I haven't thrown any codes. I just have to let the car idle for 90 seconds befoer I start driving. Adam is got me a new one under warranty from his buddy at the dealer maybe he can do the same for you.

But I would wonder if it happened after you used your cut-outs? I never thought of it before, but that might cause issues with your sensor when you open them??:blink:
 
#12 ·
Thanks, Roy!!

Mark, I've thought about that, but the cutouts are quite a ways behind the O2 sensors. And it only throws the code when the cutouts are closed.
 
#14 ·
Have you tried taking them off and looking at them? If so I would try the new sensors (Bosch)...chances are the new engine and supercharger are going to cause the same thing eventually if you get OEM sensors. I think since the AF ratio is richer than what it is supposed (12.8 for stock N/A and mid-to-high 11s for S/C) be it's fouling them up faster.
 
#19 ·
Don doesn' have L/t's.

Don - yeah, you'd think it would throw the codes when they were open but I would still ask around about it. Perhaps after closing, the sudden change is setting them off? The only thing is you are the ONLY one I know with cutouts so I don't know where to ask...:blink:
 
#20 ·
Don doesn' have L/t's.

Don - yeah, you'd think it would throw the codes when they were open but I would still ask around about it. Perhaps after closing, the sudden change is setting them off? The only thing is you are the ONLY one I know with cutouts so I don't know where to ask...:blink:
Actually, I've had LTs longer than I've had the blower...

And it's doesn't seem to be happening relative to opening or closing the cutouts. It threw both codes this morning driving to work, but I never touched the cutouts.

I'm going to watch it for another day or two, and then probably replace the O2 sensors this weekend. Process of elimination I guess.