P1663 GMC Code - Change Oil Lamp Control Circuit Conditions
Quick Answer
The P1663 GMC diagnostic trouble code indicates an issue with the Change Oil Lamp Control Circuit Conditions. Common causes include Faulty oil change lamp control module, Wiring issues in the control circuit, Malfunctioning oil pressure sensor. 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 GMC indicates Change Oil Lamp Control Circuit Conditions.
- Common causes
- Common causes include Faulty oil change lamp control module, Wiring issues in the control circuit, Malfunctioning oil pressure sensor.
- 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.
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Code P1663 GMC Description
The P1663 GMC diagnostic trouble code indicates an issue with the Change Oil Lamp Control Circuit Conditions. This code is typically found in vehicles with an oil life monitoring system that alerts the driver when it's time to change the oil. When this code is triggered, it means that there is a problem with the control circuit that manages the change oil lamp function. This could lead to the oil change indicator not functioning properly, causing potential issues with monitoring the oil life and maintenance schedule of the vehicle.
Common Causes of P1663 GMC
- Faulty oil change lamp control module
- Wiring issues in the control circuit
- Malfunctioning oil pressure sensor
- Computer system error
- Low oil level or poor oil quality
Symptoms of P1663 GMC
- Oil change indicator not illuminating when it should
- Incorrect oil change intervals displayed on the dashboard
- Inconsistent oil change reminder notifications
- Check engine light may be illuminated
- Engine performance issues
How to Fix P1663 GMC
- Begin by inspecting the oil change lamp control module and wiring for any visible damage or corrosion. Repair or replace any damaged components.
- Check the oil pressure sensor for proper function and replace if necessary.
- Reset the oil change indicator system and recalibrate as needed.
- Clear the diagnostic trouble codes from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.
- If the problem persists, consult a professional mechanic for further diagnosis and repair.
Cost to Fix P1663 GMC
The cost of repairing a P1663 GMC code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of parts and labor for this type of repair could range from $100 to $300. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get multiple quotes from different shops to ensure you get the best price for the repair.
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Frequently Asked Questions about P1663 GMC Code
1. What does the OBDII code P1663 mean on a GMC vehicle?
The P1663 code indicates a fault in the Change Oil Lamp Control Circuit, meaning the system is unable to properly control or communicate with the oil change indicator.
2. What are the symptoms of the P1663 code in a GMC?
Common symptoms include the "Change Oil" lamp not turning on or staying illuminated even after an oil change, and possibly no other noticeable performance issues.
3. What causes the P1663 code on a GMC?
The main causes include a faulty oil change reminder lamp, wiring issues such as damaged or corroded connections in the circuit, or a malfunctioning ECM (Engine Control Module).
4. Can I drive my GMC with the P1663 code active?
Yes, you can usually drive the vehicle, as this code does not directly affect engine performance. However, it’s important to address the issue to maintain proper maintenance reminders.
5. How do you diagnose the P1663 code on a GMC?
Diagnosis typically involves inspecting the oil lamp circuit and wiring for damage or loose connections, checking the functionality of the oil change reminder lamp, and testing the ECM for faults.
6. How can the P1663 code be fixed on a GMC?
Repairs may include replacing damaged wiring, cleaning corroded connectors, replacing the oil change lamp if it's faulty, or reprogramming or replacing the ECM if necessary.
7. Will resetting the oil change reminder fix the P1663 code?
Resetting the oil change reminder may temporarily clear the code, but it won’t fix any underlying issues with the circuit or lamp.
8. How much does it cost to repair the P1663 code on a GMC?
Repair costs can range from $50 to $500 depending on whether it’s a simple wiring repair or if the ECM needs replacement or reprogramming.
9. Can a blown fuse cause the P1663 code on a GMC?
Yes, a blown fuse in the circuit controlling the oil change lamp could trigger the P1663 code, so checking the fuses is a good first step.
10. Does the P1663 code require ECM replacement on a GMC?
Not always. ECM replacement is only necessary if it’s confirmed to be malfunctioning after all wiring and lamp issues have been ruled out.
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