P122A Buick Code - Fuel Injector 3 Control Circuit Shorted
Quick Answer
The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector positive voltage control circuits. Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P122A Buick indicates Fuel Injector 3 Control Circuit Shorted.
- Common causes
- Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P122A Buick Description
What are the Possible Causes of the DTC P122A Buick?
- Faulty Fuel Injector 3
- Fuel Injector 3 harness is open or shorted
- Fuel Injector 3 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P122A Buick?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P122A Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P122A Buick code?
Need more information on how to fix the P122A Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P122A Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P122A Buick Code
What does OBD-II code P122A mean in a Buick?
Code P122A indicates a shorted control circuit in Fuel Injector 3, which affects the injector's ability to deliver fuel properly.
What are the common symptoms of P122A in a Buick?
Symptoms include rough idling, engine misfires, reduced fuel efficiency, and possibly a check engine light.
What causes code P122A in a Buick?
This code is typically caused by wiring issues, short circuits, a faulty fuel injector, or a malfunctioning engine control module (ECM).
Can I drive my Buick with P122A?
Driving with this code is not recommended as it can lead to engine damage, poor performance, and increased fuel consumption.
How is P122A diagnosed on a Buick?
A mechanic will inspect the wiring, test the fuel injector, and use a scan tool to pinpoint the source of the short circuit.
How do I fix code P122A on my Buick?
Repairing or replacing the damaged wiring, faulty injector, or ECM can resolve this issue. Proper diagnosis is essential.
Is P122A a common problem in Buick vehicles?
This code is not extremely common but can occur in vehicles with aging components or poor maintenance.
How much does it cost to fix P122A on a Buick?
Costs vary depending on the root cause but can range from $150 for a wiring repair to $500 or more for injector replacement.
Can a dirty fuel injector cause P122A?
No, a dirty injector typically affects fuel flow but does not cause a short circuit. The issue is electrical in nature.
Will clearing the code fix P122A in a Buick?
Clearing the code may temporarily remove the check engine light, but the underlying issue must be repaired to prevent recurrence.
Discuss the causes and fixes for P122A Buick OBDII Code
Code P122A Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
