P1203 ISUZU Possible Causes
- Faulty fuel injector #3
- Fuel injector #3 harness is open or shorted
- Poor electrical connection in fuel injector #3 circuit
How to Fix Code P1203 ISUZU?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1203 ISUZU Meaning
Open/Shorted Injector Circuit Cylinder #3 is the generic description for Isuzu code P1203, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about Isuzu OBDII code P1203.