P1820 Saturn Code - Internal Mode Switch Circuit 'A' Low
Quick Answer
The P1820 code for Saturn vehicles refers to an issue with the Internal Mode Switch Circuit 'A' being detected as low. Common causes include Faulty Internal Mode Switch, Wiring or connection issues in the IMS circuit, Corrosion or damage to IMS components. 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
- P1820 Saturn indicates Internal Mode Switch Circuit 'A' Low.
- Common causes
- Common causes include Faulty Internal Mode Switch, Wiring or connection issues in the IMS circuit, Corrosion or damage to IMS components.
- 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 P1820 Saturn Description
The P1820 code for Saturn vehicles refers to an issue with the Internal Mode Switch Circuit 'A' being detected as low. The Internal Mode Switch (IMS) is a component within the transmission system that is responsible for communicating the gear selection to the vehicle's control module. When this circuit is detected as low, it means that there is a problem with the signal being sent from the IMS to the control module, which can have significant implications for the vehicle's performance.
Common Causes of P1820 Saturn
- Faulty Internal Mode Switch
- Wiring or connection issues in the IMS circuit
- Corrosion or damage to IMS components
- Control module malfunction
- Electrical issues in the transmission system
Symptoms of P1820 Saturn
- Harsh or delayed shifting
- Transmission getting stuck in a gear
- Limp mode activation
- Check Engine Light illuminated
- Reduced fuel efficiency
How to Fix P1820 Saturn
- Diagnose the specific cause of the P1820 code using a diagnostic scanner.
- Inspect the wiring and connections in the IMS circuit for any damage or corrosion.
- Test the Internal Mode Switch for proper functionality or replace it if necessary.
- Check the control module for any malfunctions and address any issues.
- Clear the code from the vehicle's memory and test drive to ensure the issue is resolved.
Cost to Fix P1820 Saturn
The cost of repairing the P1820 code in a Saturn vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this code can range from $200 to $500, including parts and labor. It is essential to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model, as well as the extent of the repair needed. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to get multiple quotes before proceeding with the repair.
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