P1682 Buick Code - Ignition 1 Switch Circuit 2
Quick Answer
There are 2 ignition 1 voltage circuits supplied to the Engine Control Module (ECM). Common causes include Faulty ignition switch, Ignition Switch harness is open or shorted, Ignition Switch 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
- P1682 Buick indicates Ignition 1 Switch Circuit 2.
- Common causes
- Common causes include Faulty ignition switch, Ignition Switch harness is open or shorted, Ignition Switch 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 P1682 Buick Description
What are the Possible Causes of the DTC P1682 Buick?
- Faulty ignition switch
- Ignition Switch harness is open or shorted
- Ignition Switch circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1682 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.
Code Tech Notes
CONDITION:
Customers may comment of intermittent Service Engine Soon light on with Reduced Engine Power and/or engine stall with P0689 and/or P1682 stored in history.
CAUSE:
Terminal #51 at X3 Connector of Under Hood Fuse Block loose terminal tension with arcing corrosion on terminal #51 on fuse block.
CORRECTION
1. Check for water intrusion on IP fuseblock. If water leak and corrosion is found, repair following normal SI procedures. If no indication of water or corrosion, go to the next step.
2. Remove under hood fuse block and inspect for any arcing corrosion on terminal 51 of the X3 connector. It is helpful to use a cell phone camera to zoom in on the terminal to see the arc spot. If an arc spot is found, replace under hood fuse panel and terminal 51 in the harness using a terminated lead.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1682 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.
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Frequently Asked Questions about P1682 Buick Code
1. What are common symptoms of OBDII code P1682 in a Buick related to Ignition 1 Switch Circuit 2?
The common symptoms include issues with starting the vehicle, intermittent stalling, and difficulty shifting gears.
2. What could cause OBDII code P1682 in a Buick indicating a problem with Ignition 1 Switch Circuit 2?
Possible causes may include a faulty ignition switch, wiring issues, a defective ignition lock cylinder, or a problem with the ignition relay.
3. How can I diagnose the OBDII code P1682 in my Buick related to Ignition 1 Switch Circuit 2?
Perform a thorough inspection of the ignition switch, check the wiring for any damage or loose connections, and test the ignition relay for proper functioning using a multimeter.
4. Can a DIY enthusiast repair OBDII code P1682 in a Buick associated with Ignition 1 Switch Circuit 2?
While some may attempt the repair, it is recommended to seek professional assistance as diagnosing and fixing electrical issues can be challenging and may require specialized tools.
5. Are there any quick tips for troubleshooting OBDII code P1682 related to Ignition 1 Switch Circuit 2 in a Buick?
Check the ignition switch fuse, ensure the battery is fully charged, and inspect the ignition switch connector for any signs of corrosion or damage.
6. How serious is OBDII code P1682 in a Buick indicating a problem with Ignition 1 Switch Circuit 2?
Ignoring this code can lead to issues with starting the vehicle or potential stalling while driving, making it important to address the problem promptly.
7. Is it safe to continue driving with OBDII code P1682 in a Buick related to Ignition 1 Switch Circuit 2?
It is not recommended to drive the vehicle with this code present, as it can cause unpredictable behavior and potentially leave you stranded.
8. Can a weak battery or alternator cause OBDII code P1682 in a Buick associated with Ignition 1 Switch Circuit 2?
Yes, a weak battery or alternator can sometimes trigger this code due to insufficient power reaching the ignition system components.
9. Will resetting the OBDII code P1682 related to Ignition 1 Switch Circuit 2 in my Buick make the problem go away?
Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.
10. How much does it typically cost to repair OBDII code P1682 in a Buick indicating a problem with Ignition 1 Switch Circuit 2?
The cost of repairing this code can vary depending on the specific cause, but it may range from $100 to $500 or more, including parts and labor.
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