Signal Missing. Intermittent Fault

Signal missing. Intermittent fault

Checking components and wiring
Check the heated oxygen sensor (HO2S) and engine control module (ECM) connectors for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
Check that the resistance in the heated oxygen sensor (HO2S) preheating element, between terminals 1 and 2, is approximately 5-10 ohms at +20°C.
Check the signal cable between engine control module (ECM) terminal 63 and heated oxygen sensor (HO2S) terminal 2 for an intermittent open-circuit. Remedy according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
Remedy as necessary.

Other information
- To connect the breakout box, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000
- To access / replace the heated oxygen sensor (HO2S), see Replace the front heated oxygen sensor (HO2S) Replace The Front Heated Oxygen Sensor (HO2S).













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Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

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No - FAULT FOUND

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Attempt New Test - Checking components and wiring

FAULT FOUND - DONE

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