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.
1998 Eagle Talon Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Test TC-102A: O2 Sensor 1/1 Slow Response
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
- For O2 sensor/model identification see O2 SENSOR 1/1 IDENTIFICATION table. O2 SENSOR 1/1 SLOW RESPONSE DTC sets if upstream O2S 1/1 signal voltage is switching from less than .39 volt to more than .6 volt and back fewer times than required. Possible causes are: exhaust leak, fuel contamination, dirty or wet O2 sensor connector causing voltage tracking or engine mechanical failure. Go to next step.O2 SENSOR 1/1 IDENTIFICATION
Application Location Avenger, Sebring Coupe & Talon 4-Cylinder Upstream O2S V6 Rear Bank Upstream O2S Breeze, Cirrus, Neon, Sebring Conv. & Stratus 4-Cylinder Upstream O2S V6 Upstream O2S - Start engine. Check for exhaust system leaks between engine and catalytic converter. If no exhaust system leaks are found, go to next step. If exhaust system leaks are found, repair exhaust system as necessary. Perform TEST VER-5A .
- Check exhaust for excessive smoke from coolant or oil consumption. If coolant or oil consumption is not present, go to next step. If coolant or oil consumption is present, repair engine mechanical failure as necessary. Replace O2S 1/1. Perform TEST VER-5A .
- Turn ignition off. Disconnect O2S 1/1 connector. Using an ohmmeter, check resistance of sensor ground circuit between O2S 1/1 connector (harness side) and ground. See O2S 1/1 CONNECTOR WIRE IDENTIFICATION (HARNESS SIDE) table. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open sensor ground circuit. Perform TEST VER-5A .
- Disconnect Powertrain Control Module (PCM) connector. Inspect PCM connector. If condition of PCM connector is okay, replace O2S 1/1. Perform TEST VER-5A . If condition of PCM connector is not okay, repair as necessary. Perform TEST VER-5A .
O2S 1/1 CONNECTOR WIRE IDENTIFICATION (HARNESS SIDE)
| Application | Wire Color | |
|---|---|---|
| O2S 1/1 Sensor Signal Circuit | ||
| Avenger, Sebring Coupe & Talon | White/Black | |
| Breeze, Cirrus, Neon, Sebring Conv. & Stratus | Black/Dark Green | |
| O2S 1/1 Sensor Ground Circuit | ||
| Avenger, Sebring Coupe & Talon | Black/Dark Green | |
| Breeze, Cirrus, Neon, Sebring Conv. & Stratus | Black/Light Blue | |
Factory Service Tools
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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.
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