AutoCodes – Buick – P1663 Buick

P1663 Buick Code - Change Oil Lamp Control Circuit Conditions

Quick Answer

With the engine speed over 600 rpm, the Powertrain Control Module (PCM) detects that commanded state of the Change Oil Lamp driver and the Actual state of the control circuit did not match for over 5 seconds. Common causes include Faulty Change Oil Lamp, Change Oil Lamp harness is open or shorted, Change Oil Lamp circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P1663 Buick indicates Change Oil Lamp Control Circuit Conditions.
Common causes: Common causes include Faulty Change Oil Lamp, Change Oil Lamp harness is open or shorted, Change Oil Lamp circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,590

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 07, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1663 Buick Description

OBDII Code P1663 Buick - Change Oil Lamp Control Circuit Conditions - AutoCodes.com — P1663 Buick Code - Change Oil Lamp Control Circuit Conditions

What does this mean?

What are the Possible Causes of the DTC P1663 Buick?

Faulty Change Oil Lamp
Change Oil Lamp harness is open or shorted
Change Oil Lamp circuit poor electrical connection

How to Fix the DTC P1663 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 P1663 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 P1663 Buick code?

Need more information on how to fix the P1663 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1663 Buick code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.