Signal Missing. Intermittent Fault

Signal missing. Intermittent fault

EFI-153 Rear heated oxygen sensor (HO2S), signal

Checking cables and terminals

Caution! Do not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.




- Check cable between rear heated oxygen sensor (HO2S) terminal 4 and engine control module (ECM) #A34 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between rear heated oxygen sensor (HO2S) terminal 3 and engine control module (ECM) #A19 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check engine control module (ECM) and rear heated oxygen sensor (HO2S) connectors for loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Continue - Fault-tracing information
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 cables and terminals

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