Signal Missing. Intermittent Fault

Signal missing. Intermittent fault

Checking wiring and connectors




- Ignition off.
Check the rear heated oxygen sensor (HO2S) connector. Check 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 #65 and heated oxygen sensor (HO2S) connector terminal #2. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the cable between fuse 18 in the integrated relay / fusebox in the engine compartment and heated oxygen sensor (HO2S) terminal #1. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Try a new rear heated oxygen sensor (HO2S) if no fault is found during the above fault-tracing.
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 rear heated oxygen sensor (HO2S), see Replacing lambda sond rear 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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