Boost temp sensor (T121)
â–¶ How to fix
Check the connectors and wiring. Measure the resistance in the boost temperature sensor. Measure the sensors supply voltage
What you'll see
No driver-visible symptom recorded.
System reaction
The engine performance could be affected. There is risk for black smoke.
Diagnostic depth
Detection
Short circuit to battery or open circuit on the boost temperature sensor (T121)
Possible cause
Short circuit to battery or open circuit on the boost temperature sensor (T121)