P1278 LEXUS Possible Causes
- Faulty fuel injector
- Fuel injector harness is open or shorted
- Poor electrical connection in the fuel injector circuit
How is the repair of code P1278 LEXUS performed?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1278 LEXUS Meaning
Port 3 injector circuit number is the generic description for Lexus code P1278, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have additional information about the Lexus P1278 OBDII code.