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  #1  
Old 02-22-2010, 07:05 PM
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Default Check Engine Code P0157

As i posted last week my check engine light came on then turned off and hasnt come on since. I checked the code today and it was P0157 just wondering if anyone knows what that is.
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Old 02-22-2010, 07:16 PM
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P0157 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2). Could just be a one time thing. I would wait to see if it comes on again, unless you are having any other problems(fuel economy, running rough, etc). If the code went out, the condition that set it is resolved and the code is stored for later diagnostics. I would not reset the computer, just leave the code stored.
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Old 02-23-2010, 08:48 PM
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if it's sensor 2, bank 2.. that is the O2 sensor after the cat on passenger side...this sensor only monitors the cats so I wouldn't be too worried about it...did you change your exhaust at all?
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Old 06-10-2012, 09:30 PM
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I'm getting the same error code, I just installed headers, I removed the cats, the error code just popped up today but Iv been running the truck for about a week without any codes, I tried clearing it with my programmer but it keeps comming back, and it seems to burning a little more fuel then normal
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Old 06-10-2012, 09:58 PM
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P0157-O2 SENSOR 2/2 CIRCUIT LOW VOLTAGE

When Monitored: Engine running for less than 30 seconds and the O2 Sensor Heater Temperature is less than 251C (484F) with battery voltage greater 10.4 volts.
Set Condition:
The oxygen sensor signal voltage is below 2.411 volts for 10.24 seconds after starting engine. One Trip Fault.

POSSIBLE CAUSES

O2 SENSOR BELOW 2.52 VOLTS
O2 SENSOR O2 RETURN CIRCUIT SHORTED TO GROUND PCM
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Old 06-11-2012, 11:36 AM
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Quote:
Originally Posted by kombucha20 View Post
I'm getting the same error code, I just installed headers, I removed the cats, the error code just popped up today but Iv been running the truck for about a week without any codes, I tried clearing it with my programmer but it keeps comming back, and it seems to burning a little more fuel then normal
in your case you need to do something to the sensors since you've gone catless.. you can try using spark plug foulers which moves the sensor out of the direct exhaust path..



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Old 06-14-2012, 07:00 PM
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right on thanks, i;ll give those a try
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