Exhaust 1 temp sensor (TE09/T158-1) electrical fault
â–¶ How to fix
Replace the HTS unit with all its probes.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
HTS indicates probe 1 electrical fault in the probe.
Possible cause
OL or SC at the probe's inputs in HTS unit, disrupted thermocouple, common mode voltage out of range, too low isolation resistance for the thermocouple, signal path check fail for the probe.