Engine-Codes.com | All About OBDII Engine Codes
Engine-Codes.com | All About OBDII Engine Codes

P0133 Chevrolet

P0133 Chevrolet - HO2S Slow Response Bank 1 Sensor 1

PDF
P0133 Chevrolet Comments |  Add Comment
Possible causes
- Faulty Front Heated Oxygen Sensor Bank 1
- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
Help with Possible causes What does this mean?
Tech notes
Replacing the Front Heated Oxygen Sensor Bank 1 usually takes care of the problem
Help with Tech Notes What does this mean?
When is the code detected?
The response of the voltage signal from the sensor takes more than the specified time.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- High Fuel Consumption
- Excessive Smoke from Exhaust
P0133 Chevrolet Description

The Powertrain Control Module (PCM) continuously monitors the Heated Oxygen Sensor (HO2S) activity for 100 seconds. During the monitor period the PCM counts the number of times that the HO2S responds from rich to lean and from lean to rich and adds the amount of time it took to complete all transitions. With this information, the PCM can determine the average time for all transitions. If the average response time is too slow, a DTC sets.

The PCM determines the lean to rich transition when the HO2S voltage changes from less than 300 mV to greater than 600 mV. The PCM determines the rich to lean transition when the HO2S voltage changes from more than 600 mV to less than 300 mV. An HO2S that responds too slowly is most likely defective. Replace the HO2S.

Need more help?
Do you need more help with the P0133 Chevrolet code? ask a question to our users or search the top hand picked automotive forums for more information


(You will add more details to the question in the next step)
or
CHEVROLET Technical Service Bulletins for P0133 code
2004 CHEVROLET AVEO Electrical System Details
2005 CHEVROLET AVEO Electrical System Details
2006 CHEVROLET AVEO Electrical System Details
2007 CHEVROLET AVEO Electrical System Details
2008 CHEVROLET AVEO Electrical System Details
More Bulletins Help with Technical Service Bulletins What does this mean?
Repair Shops Around Your Area
  • 4x4 Land LLC 18 Views
    Yelp Rating on Engine-Codes.com
    14065 Willard Rd
    Chantilly, VA
    (703) 263-3307
  • A & G Car Care 14 Views
    4076 Walney Rd
    Chantilly, VA
    (703) 378-2005
  • A & J Automotive 19 Views
    4399 Henninger Ct Unit-H
    Centreville, VA
    (703) 817-9880
See More...
Need parts?
Need parts to fix this code? Search hundreds of stores at the same time and compare prices


Help Engine-Codes.com
Help us improve Engine-Codes.com. Leave a comment below or tell us if the information above help you fix the code. What are symptoms is your vehicle for the P0133 Chevrolet code? Have you replaced any parts?
Any information is appreciated. Thanks
Engine-Codes.com Comments Powered by Disqus
Google +
Engine Light ON?

The Engine-Codes.com ELM327 WiFi Car Diagnostic connects to your Android phone, iPhone, iPad, or Windows computer from your vehicle.
Ask OBDII Question