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.
Test Dr-2A - Testing Oxygen (O2) Sensor (Code 11)
1993 Eagle Talon DL, StandardSECTION Test Dr-2A - Testing Oxygen (O2) Sensor (Code 11)
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For appropriate wiring diagram, see WIRING DIAGRAMS
at end of article.
- Using DRB-II, erase fault codes. Start engine. Run engine until coolant temperature reaches 160°F (71°C). Read O2 sensor voltage. If O2 sensor voltage is other than a constant zero volts, go to step 3).
- If O2 sensor voltage is a constant zero volts, disconnect O2 sensor connector. If O2 sensor voltage is still a constant zero volts, repair White wire for a short to ground between O2 sensor connector and ECU 24-pin connector terminal No. 4. Perform TEST VER-2. If O2 sensor voltage is not a constant zero volts, replace O2 sensor. Perform TEST VER-2.
- Recheck O2 sensor voltage. If O2 sensor voltage is not a constant .03 volt, replace O2 sensor. If O2 sensor voltage is a constant .03 volt, disconnect O2 sensor connector. Connect a jumper wire between O2 sensor White wire and ground.
- If O2 sensor voltage is still a constant .03 volt, go to step 6). If O2 sensor voltage is not a constant .03 volt, turn ignition switch to OFF position. Measure resistance between O2 sensor Black wire and ground.
- If resistance is more than 10 ohms, repair open Black wire between ECU 24-pin connector terminal No. 24 and O2 sensor. Perform TEST VER-2. If resistance is less than 10 ohms, replace O2 sensor. Perform TEST VER-2.
- Turn ignition switch to OFF position. Disconnect ECU 24-pin connector. Measure resistance of White wire between ECU 24-pin connector terminal No. 4 and O2 sensor connector.
- If resistance is more than 10 ohms, repair open White wire between ECU 24-pin connector terminal No. 4 and O2 sensor connector. Perform TEST VER-2. If resistance is less than 10 ohms, replace ECU. Perform TEST VER-2.
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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.