P1140 BUICK Possible Causes
- Faulty HO2S, Bank 1 Sensor 2
- Open or short circuit in HO2S Bank 1 Sensor 2 wiring
- Poor electrical connection in HO2S Bank 1 Sensor 2 circuit
How to Fix P1140 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)
P1140 BUICK Meaning
HO2S Transition Time Ratio, Bank 1 Sensor 2 is the generic description for Buick P1140 code, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have more information about Buick OBDII P1140 code.