Question about 2001 Chevrolet Silverado 1500
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Posted on Jan 02, 2017
SOURCE: diagnostic codes
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
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
Just had BOTH of my O2 sensors replaced in my 2002 Miata. The sensors are located
1. at the back of the engine compartment look down (on the passenger side ) You should see a spark plug looking device near the bottom of the engine (on the side) it has a short wire output that goes to a connector looking device on the other end. This O2 sensor had a short wire connector on the other end
Probably can be replaced from the top.
2. This one is tougher --- From underneath the vehicle just after the catalytic converter you should be able to see the Spark plug like O2 sensor . The person who repaired it for me had to trace the wire from the O2 sensor. It goes up into ( perhaps the frame or bottom of the vehicle INTO the Driver compartment under the drivers seat. It is located near the Center Console right at the carpet seam. It was about in a straight line from the BACK of the Drivers side Car Door. He felt around -- and located the Connector (under the carpet near the center console. . He checked underneath the car to the point where the wire disappeared --to confirm he had the correct wire.
Once he located where the sensor wire led to --He had the old sensor out and wire connector disconnected and a New sensor and the connector installed in about 10 minutes.
The O2 sensor for this one was much longer than the first O2 sensor in the engine compartment He had to use some sort of standard release spray on the old sensor itself --to remove the old O2 Sensor. Since it is exposed to the elements under the car. Wrench, I think a screwdriver and the spray were all the tools I remember him using.....
The autozone code indicated only the engine compartment sensor was bad.
The repair man told me Both usually go bad at the same time.
I fixed the first one only -- turned out the warning light lit up a day or so later indicating the second O2 Sensor under the vehicle was bad. Fixed that as well -- have had no problems since -- repair was about 4 months ago.....
Posted on May 24, 2009
SOURCE: 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.
Posted on May 25, 2009
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