P1200 BUICK Possible Causes
- Faulty fuel injector
- Fuel injector harness is open or shorted
- Poor electrical connection in fuel injector circuit
How to Fix P1200 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 engine service warning light soon)
P1200 BUICK Meaning
While the engine is running, the Powertrain Control Module (PCM) detects an incorrect voltage level on one or more fuel injector control circuits for more than 5 seconds.