P1203 BUICK Possible Causes
- Faulty mass airflow sensor
- Mass airflow sensor harness is open or shorted
- Poor electrical connection in mass airflow sensor circuit
How to Fix P1203 BUICK Code?
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 BUICK Meaning
Mass Air Flow Sensor Circuit High Frequency is the generic description for Buick P1203 code, but the manufacturer may have a different description for your specific model and vehicle year. Currently, we don’t have more information about the Buick P1203 OBDII code.