Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006OPTRA (CANADA) L4-2.0LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSENGINE CONTROLS - MIL ON/DTC P0133 SET
2006 Chevrolet Optra (CANADA) L4-2.0L
Engine Controls - MIL ON/DTC P0133 Set
2006 Chevrolet Optra (CANADA) L4-2.0LSECTION Engine Controls - MIL ON/DTC P0133 Set
# 07-06-04-006: Malfunction Indicator Lamp (MIL)/Service Engine Soon (SES) Lamp Illuminated, DTC P0133 (HO2S Slow Response Sensor 1) Set (Reprogram ECM, Check Date Code on Oxygen Sensor and Replace If Necessary) - (Jul 1, 2011)
Subject: Malfunction Indicator Lamp (MIL)/Service Engine Soon (SES) Lamp Illuminated, DTC P0133 (HO2S Slow Response Sensor 1) Set (Reprogram ECM, Check Date Code on Oxygen Sensor and Replace If Necessary)
Models:
2006-2007 Chevrolet Optra (Canada Only)
Condition
Some customers may comment that the Check Engine or SES lamp is illuminated. Technicians may find DTC P0133 (HO2S Slow Response Sensor 1) set.
Correction
Technicians should inspect the front O2 sensors (and replace if necessary), then reprogram the ECM on all vehicles affected by this condition following the procedure below.
1. Remove the front O2 sensor. Refer to Heated Oxygen Sensor 1 Replacement (2.0L L34) in SI.
2. Inspect the front O2 sensor date code (1). The date code can be interpreted as follows:
^ 1st digit = year (6 = 2006)
^ 2nd digit = month (A = January, B = February, C = March, D = April, and so on)
^ 3rd/4th digits = day of month
3. If the date code is 6D20 (April 20, 2006) or prior, replace the front O2 sensor with P/N 96418971. If the date code is after 6D20, the front O2 sensor does NOT need to be replaced.
4. Check the vehicle configuration (automatic or manual transaxle) to determine the correct calibration.
Important:
Prior to reprogramming, check the battery voltage state. If the battery is not fully charged, charge the battery.
Important:
Prior to reprogramming, make sure the Tech 2(R) is updated with the latest software.
5. Reprogram the ECM with the appropriate calibration (or later) listed below. These calibrations, or any that follow, are designed to address this concern. Refer to Service Programming System (SPS) in SI.
The new ECM calibrations will be available to dealerships in TIS2Web version 2.5 for 2007 (available 2/19/07). If you cannot access the calibration, call the Techline Customer Support Center (TCSC) and it will be provided. As always, make sure the Tech 2(R) is updated with the latest software version.
6. Check for any DTCs in the ECM/TCM. Clear any DTCs that are stored.
Calibration Information
Parts Information
Warranty Information
For vehicles repaired under warranty, use the above chart.
Disclaimer
Subject: Malfunction Indicator Lamp (MIL)/Service Engine Soon (SES) Lamp Illuminated, DTC P0133 (HO2S Slow Response Sensor 1) Set (Reprogram ECM, Check Date Code on Oxygen Sensor and Replace If Necessary)
Models:
2006-2007 Chevrolet Optra (Canada Only)
Condition
Some customers may comment that the Check Engine or SES lamp is illuminated. Technicians may find DTC P0133 (HO2S Slow Response Sensor 1) set.
Correction
Technicians should inspect the front O2 sensors (and replace if necessary), then reprogram the ECM on all vehicles affected by this condition following the procedure below.
1. Remove the front O2 sensor. Refer to Heated Oxygen Sensor 1 Replacement (2.0L L34) in SI.
2. Inspect the front O2 sensor date code (1). The date code can be interpreted as follows:
^ 1st digit = year (6 = 2006)
^ 2nd digit = month (A = January, B = February, C = March, D = April, and so on)
^ 3rd/4th digits = day of month
3. If the date code is 6D20 (April 20, 2006) or prior, replace the front O2 sensor with P/N 96418971. If the date code is after 6D20, the front O2 sensor does NOT need to be replaced.
4. Check the vehicle configuration (automatic or manual transaxle) to determine the correct calibration.
Important:
Prior to reprogramming, check the battery voltage state. If the battery is not fully charged, charge the battery.
Important:
Prior to reprogramming, make sure the Tech 2(R) is updated with the latest software.
5. Reprogram the ECM with the appropriate calibration (or later) listed below. These calibrations, or any that follow, are designed to address this concern. Refer to Service Programming System (SPS) in SI.
The new ECM calibrations will be available to dealerships in TIS2Web version 2.5 for 2007 (available 2/19/07). If you cannot access the calibration, call the Techline Customer Support Center (TCSC) and it will be provided. As always, make sure the Tech 2(R) is updated with the latest software version.
6. Check for any DTCs in the ECM/TCM. Clear any DTCs that are stored.
Calibration Information
Parts Information
Warranty Information
For vehicles repaired under warranty, use the above chart.
Disclaimer
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.