Question about 1997 Saturn SL

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Problem code P0133 ("O2 Circuit slow response")

Code reader goes on"Bank 1, Sensor 1". Does this mean the O2 sensor needs to be replaced?? HELP, PLEASE.

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  • Anonymous Mar 27, 2014

    I have codes p0405 egr sens A circuit low. p0171&4 bank 1&2 system too lean. I have removed and cleaned egr valve with no change, code comes back. when I clear codes car surges when trying to accelerate. when code comes back surge stops. I believe this means the car runs better when bypassing the egr because of code shutdown of egr. Does this mean I need to replace the egr even though it was not bad looking and I could move the valve up and down easily?

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Yes i would recommend replacing the o2 sensor, 9 times out of 10 it will correct the problem and they usually aren't too expensive for the saturn's

Posted on Nov 27, 2008

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2 Answers

My 2004 Honda CRV showing code P0133 and P0171


  • P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
  • P0171 System Too Lean (Bank 1)
Hi Michael, After fixing errors you need to reset your computer by disconnecting the battery for a minute or two, Also you'll need your radio code to reset your radio, I hope this helped...........CHEERS..

May 07, 2016 | Honda Cars & Trucks

1 Answer

Why does po131 keep returning after i replaced bank 1 02 sensor ? i clear codes and en about a week code returns data looks good


See causes
P0131 OBD-II Trouble Code Technical Description

Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
What does that mean? Essentially the same as P0136 and P0137, a P0131 code refers to the first oxygen sensor on Bank 1.
P0131 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes. This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 1 Sensor 1 is located in front of the catalytic converter.
Symptoms There may be no visible symptoms to the driver, other than the MIL (Check Engine / Service Engine Soon) illumination.
Causes A code P0131 may mean that one or more of the following has happened:

  • Faulty o2 oxygen sensor
  • Short to voltage on O2 signal circuit
  • High resistance or open on O2 signal circuit
Possible Solutions
  • Replace faulty sensor
  • Repair short, open, or high resistance on o2 signal circuit

Oct 01, 2015 | Cars & Trucks

1 Answer

Throwing 1 code po133, pending code po171


Nice info but what's your question ? You have a Oxygen Sensor Circuit Slow Response (Bank1, Sensor1) code P0133 , an you have P0171 System Too Lean (Bank 1) ! You have a bad O2 sensor , vacuum leak , Test O2 Sensor mov

Sep 02, 2015 | Cars & Trucks

1 Answer

Engine Code O2 Sensor Circuit, HV Bank 1, Sensor 2


You did not say what your car was ,however most newer cars use 2 oxygen sensors per bank, if it is a 4 cyl replace downstream o2 sensor,if 6 or 8 cyl bank 1 sensor 2 is downstream sensor on bank that has cyl 1 on it.upstream sensor is in front of catalytic converter downstream is after the cat

Mar 17, 2015 | Cars & Trucks

4 Answers

What does code p0155 mean


P0155 = 2/1 O2 Sensor Heater Failure, Oxygen sensor heater element malfunction. logic dictates that you replace your O2 Sensor. DIY car obd2 code scanner online shopping

Jun 05, 2014 | 2004 Chevrolet Avalanche

2 Answers

Trouble code p0134, p0135 p0053 p0030


P0134 - O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0053 - O2 Heater Resistance Bank 1 Sensor 1
P0030 - O2 Heater Control Circuit Bank 1 Sensor 1
You need to replace the O2 Sensor Bank 1 Sensor 1
Carquest can help you get the correct part and help you locate it.

Apr 01, 2014 | 2006 GMC Envoy Xl

1 Answer

1998 nissan altima trouble code p0135


The code P0135 means O2 sensor heater circuit malfunction bank 1 sensor 1. This means you most likely have a bad O2 sensor. The possible causes are:

TT - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM) Usually the code indicates a bad Oxygen sensor, but an intake vacuum leak or a failing fuel pump can cause the code, so check your intake vacuum hose for a leak or hole. But most likely, you have a faulty Oxygen sensor. Now Bank 1 Sensor 1 means the bad O2 sensor is the one on the number one cylinder side (which is the cylinder closest to the timing belt or where all your belts and pulleys are),which is bank one. If you look really closely, you will see that the number 1 cylinder is just a little bit closer to the belts than the number 2 cylinder. Now that you know which side you are dealing with, the next step is which sensor. There are two O2 sensors on each side (upstream or downstream), four total. Sensor 1 is the upstream sensor, which is before the catalytic converter closest to the exhaust manifold. Number 2 sensor is on or after the catalytic converter. So in short, you are replacing the O2 sensor on the Number 1 cylinder side before the catalytic converter. They are a pain to remove. Get some Pb Blaster lubricating oil and spray on the threads and let sit for 10 minutes and spray it again. You will need a 7/8 Oxygen sensor removal socket to remove it. Don't forget to disconnect negative battery terminal and O2 wire harness first.. Any questions please feel free to email me. Good luck.

Nov 30, 2013 | 1998 Nissan Altima

1 Answer

I just changed the o2 sensor bank 1 sensor 2


Well, FIRST let me ask you what does B1S2 mean to you?

Bank 1 means it is the same side as the #1 Cylinder
Sensor 2 means it is the Sensor DOWN STREAM or AFTER the Catalytic converter..

With this being said... Are you sure you changed the correct O2 Sensor?

The Second thing that I need to tell you is this... Because it says O2 Sensor. Majority of the time it is the Sensor, but it could be other things... Broken Wire, Computer, Fuel Pressure and if it is DOWNSTEAM... Then it could be the CAT.

THEN.... I looked up and see that it was a HONDA and low and behold it occurred to me...

WHERE DID YOU GET YOUR O2 Sensor From? (this is where I saved so many people)...

Honda has made the variables so TIGHT that an AFTERMARKET O2 Sensor does not work....

If you have a ULEV Vehicle (Ultra Low Emissions Vehicle), you are pretty much forced to get the Sensor from Honda....

That would be my FIRST GUESS.... Get the HONDA Part...

Apr 05, 2013 | 2003 Honda Odyssey

1 Answer

I have a 1996 camry code po135 can anyone tell me which o2 sensor to replace the car have 4 o2 sensor i check the code with my code reader it tell me o2 bank-1 sensor -1 where that located at on car.....


Bank one sensor one is on the side with cylinder one and before the catalytic converter.
Please be aware the code is for the heater circuit which may mean the sensor is bad, or the sensor may be ok and the problem is in the heater circuit.

Feb 21, 2013 | 1996 Toyota Camry

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