P1682 Cadillac Code - Ignition 1 Switch Circuit 2
Quick Answer
The P1682 code for Cadillac vehicles refers to a problem with the Ignition 1 Switch Circuit 2. Common causes include Faulty ignition switch, Wiring issues, Blown fuse. 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 Cadillac indicates Ignition 1 Switch Circuit 2.
- Common causes
- Common causes include Faulty ignition switch, Wiring issues, Blown fuse.
- 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.
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Code P1682 Cadillac Description
The P1682 code for Cadillac vehicles refers to a problem with the Ignition 1 Switch Circuit 2. This code indicates that there is a malfunction in the circuit that controls the ignition switch, which is responsible for turning the vehicle on and off. The ignition switch is a crucial component of the vehicle's electrical system, as it provides power to various systems such as the engine, fuel pump, and ignition system.
Common Causes of P1682 Cadillac
- Faulty ignition switch
- Wiring issues
- Blown fuse
- Malfunctioning ignition relay
Symptoms of P1682 Cadillac
- Difficulty starting the vehicle
- Intermittent loss of power to electrical components
- Engine stalling or misfiring
- Inconsistent behavior of the radio or lights
How to Fix P1682 Cadillac
- Begin by diagnosing the specific cause of the issue with a diagnostic scan tool to pinpoint the exact problem area.
- Inspect the ignition switch, wiring, fuses, and relays for any visible damage or signs of wear.
- Replace any faulty components, such as the ignition switch or damaged wiring, to resolve the issue.
- Clear the diagnostic trouble codes from the vehicle's computer to reset the system.
- Test the vehicle to ensure that the issue has been successfully resolved and that the code does not reappear.
Cost to Fix P1682 Cadillac
The typical repair costs for addressing a P1682 code on a Cadillac vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts for this repair could range from $50 to $200, while labor costs could range from $100 to $300. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the technician's hourly labor rates. It is advisable to consult with a qualified mechanic or repair shop for a more accurate cost estimate for addressing this issue.
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Frequently Asked Questions about P1682 Cadillac Code
No Frequently Asked Questions about P1682 Cadillac Code found.
Discuss the causes and fixes for P1682 Cadillac OBDII Code
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I have p1682 and the car will not start. I just changed the water pump, thermostat and power steering pump. I had to remove the intake and the water pump manifold. I think I might have left something unplugged. Were do I begin to find it. I have checked everywhere.
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Hello. Let me check for more information. What model and year is your vehicle?
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Start with the battery terminals. Make sure the battery terminals are clean and tight. If the battery is OK, then the next step based on the P1682 code, is to try swapping or replacing the Powertrain Control Module (PCM) relay.

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Have P1682 code on 2013 CTS and can't clear the code get no crank or start. What could be the issue? have checked all fuses and changed starter relay but get no crank or start
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Unfortunately, I haven't had that problem, but according to a national database of repairs for your model year, the Ignition Switch is the most probable cause of your problem.
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thanks will have to take it somewhere to get that done. beyond my expertise.
Also saw possible fuel pump module ecm issues as possible causes. hoping for cheapest repair
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