Signal Too Low. Intermittent Fault

Signal too low. Intermittent fault

Checking wiring and connectors




- Ignition off
- Check the front heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the cable between control module terminal #63 and heated oxygen sensor (HO2S) connector terminal #2. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Remedy as necessary.

Other information
- To connect the breakout box and access the control module, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000
- To access or replace the front heated oxygen sensor (HO2S), see Replace the front heated oxygen sensor (HO2S) Service and Repair
- For information about signals see Signal specification Signal Specification.













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).

Do you want to view the information again?

Yes - Attempt New Test

No - FAULT FOUND

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Attempt New Test - Checking wiring and connectors

FAULT FOUND - DONE

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