Question about 1997 Chevrolet Tahoe

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Diagnostic codes what does codes p1133 p1153 p1460 p0420 p0152 mean

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P1133 O2 sensor insufficent switching (pre converter, left bank)

p1153 ) 02 sensor insufficient switching preconverter right bank

P0420) catalyst system efficiency below threshold left bank

P0151) 02 sensor circuit high voltage pre converter right bank

and p1460 unfortunately I don't have handy..... But REALLY sounds like you need to replace the Oxygen sensors in front of the catalitic converters... There is dual exhaust coming from the engine to one muffler in that truck, there are a total of 2 converters and 4 O2 sensors (1 in front of converter and 1 behind it on both of the pipes) Front ones are definetely shot!!!! Be prepared to put the rear ones in shortly after!!!!! they are about $80 canadian each at the jobbers and probably more at the dealer!!!!!

Posted on Feb 28, 2009

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SOURCE: diagnostic codes 97 tahoe 4d 4wd 5.7

p1460 cooling fan circuit,p1153 ho2s insufficient switching bank 2 sensor 1,p1133 insuf. swit. sen. 1 or bank 1 sen. 1,p420 catalyst system efficiency below threshold bank 1,p152 o2sen. circuit high volt. bank 2 sen.1

Posted on Feb 25, 2009

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What means catalyst Efficiency below normal


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Jan 26, 2016 | Cars & Trucks

1 Answer

Diagnostic Codes


If they are old, just replace them. I know $75 a pop is a bit pricy, but dont just buy one. Buy a set if the ones your replacing are old. If one is going out, the other is shortly behind. I dont really have a preferance so choose at your own will.

Aug 29, 2015 | Cars & Trucks

1 Answer

1999 solara. Codes p1133 and p1153


DTC P1133: A/F sensor circuit slow response (bank1, sensor1). Probable cause:
1. Faulty sensor
2. Damaged or corroded connector terminal contact
3. Wire harness fault. Check for correct voltage, open, short to ground, short to voltage
4. Control unit software needs update
5. Faulty PCM or ECM
6. HO2S sensor contaminated or damaged

DTC P1153: Same as above for bank 2

Sep 16, 2014 | 1999 Toyota Camry Solara

1 Answer

P1133 p1153


P1153 AND P1133 ARE THE 2 FRONT OXYGEN SENSORS NOT WORKING BY CODE, BEFORE REPLACEMENT OF THIS SENSORS, MAKE SURE THE FUEL PRESSURE IS CORRECT AND NOT TOO RICH OR TOO LEAN, ALSO MAKE SURE THE ENGINE IS SMOOTH WHEN IDLE, IF A MISFIRE OR MORE IS THERE REPAIR THE MISFIRE FIRST THEN CLEAR THE CODES AND DRIVE IT 2 CYCLES FIND OUT IF IT IS CORRECTED, THEN IF THEY COME BACK REPLACE BOTH OXYGEN SENSORS UP STREEP ON TOM OF THE CATALYTIC CONVERTOR.

May 28, 2014 | 1999 Cadillac Escalade

2 Answers

My 1999 Chev Tahoe will not start - Has codes p0430 and p0420


Hi Charlie,
Diagnostic Test Codes (DTCs) P0420 and P0430 ar "Catalyst Efficiency" codes. These simply mean that the catalytic converters in your vehicle are not performing the way they should be. To fix these codes, you will most likely have to replace the converters. However, these codes do NOT indicate why your engine wil not start. There are many things that can cause an engine to not start. Many of which may or may not set fault codes. You need to determine if the engine is getting fuel and ignition first then go from there.

Dec 17, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

Error codes 1133 & 1153 1998 chevy blazer


code P1133 is for a problem with 02 sensor bank one sensor one. this is the left 02 sensor in front of the cat. converter. code P1153 is for a problem with 02 sensor bank 2 sensor 1, which is located on the right side of engine in front of the cat. converter

Jul 07, 2011 | Chevrolet Blazer Cars & Trucks

1 Answer

I was getting a p0420 code on my 2001 alero and now when I reset the light I am getting a p1133 code. I did put gas treatment into the full tank of gas and then the p1133 code came on. any suggestion on...


You never replaced the exhaust converter,ruined by the
coolant--- PO420

The P1133 is probably an O2 Sensor also ruined
I would replace them all.

Who ever did the head gasket should have done
all that

Don't waste your money on anything that goes
into a fuel tank,not necessary,nor does it fix anything

Dec 20, 2010 | Oldsmobile Alero Cars & Trucks

1 Answer

Codes p1153 -p1140 -p1133-p0174


P0174 Basically this means that an O2 sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1.
P0140 Basically this means the an O2 sensor in Bank 1 detected a lean condition, same as mentioned above. Bank 1 is the side where cylinder #1 is.
In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling.

P1133 and P1153 indicate that the HO25 Sensor has gone bad. There the O2 sensor to the left and right bank at the exhaust manifold. When the engine first start's the PCM runs on a open loop and ignores the O2 readings till it reaches it's operating temperature. Once the operating temperature has been reached the diagnostic will only run once per ignition cycle and if the PCM detects a lesser then specified value, a DTC of P1133 or P1153 will come up.
Once the problem has been repaired, after 3 start cycle will reset the MIL light. If the O2 is just dirty and slow to heat up try cycling the ignition start 3 times and the light should go off if the O2 sensor does not fail.
Try cleaning the MAF first and see if the light comes off after a few ignition cycle, If the service light is still on you can always have Auto Zone clear the DTC codes and see if it comes back which then check the left and right bank wire harness to the O2 sensors. 
Good luck and hope this helps, keep me posted.

May 25, 2009 | 1997 Oldsmobile Aurora

1 Answer

Diagnostic codes 97 tahoe 4d 4wd 5.7


p1460 cooling fan circuit,p1153 ho2s insufficient switching bank 2 sensor 1,p1133 insuf. swit. sen. 1 or bank 1 sen. 1,p420 catalyst system efficiency below threshold bank 1,p152 o2sen. circuit high volt. bank 2 sen.1

Feb 24, 2009 | 1997 Chevrolet Tahoe

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