P1520 Chevrolet Code - Transmission Range Switch Circuit
Quick Answer
The P1520 code for Chevrolet vehicles refers to an issue with the Transmission Range Switch Circuit. Common causes include Faulty transmission range switch, Damaged wiring or connectors in the circuit, ECM communication issues. 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
- P1520 Chevrolet indicates Transmission Range Switch Circuit.
- Common causes
- Common causes include Faulty transmission range switch, Damaged wiring or connectors in the circuit, ECM communication issues.
- 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 P1520 Chevrolet Description
The P1520 code for Chevrolet vehicles refers to an issue with the Transmission Range Switch Circuit. This switch, also known as the neutral safety switch or transmission position switch, plays a crucial role in the operation of the transmission system. It is responsible for telling the engine control module (ECM) what gear the transmission is in, which allows the ECM to adjust various parameters such as fuel delivery, ignition timing, and shift points.
Common Causes of P1520 Chevrolet
- Faulty transmission range switch
- Damaged wiring or connectors in the circuit
- ECM communication issues
- Corrosion or contamination in the switch
- Mechanical damage to the transmission range switch
Symptoms of P1520 Chevrolet
- Harsh shifting between gears
- Delayed or erratic gear engagement
- Inability to shift gears
- Limp mode activation
- Check Engine Light illuminated
How to Fix P1520 Chevrolet
- Diagnose the issue by using a scan tool to retrieve the trouble code and monitor the transmission range switch's output.
- Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
- Test the transmission range switch for proper operation using a multimeter or a specialized tool.
- Replace the transmission range switch if it is found to be faulty. Ensure proper installation and calibration.
- Clear the trouble code and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1520 Chevrolet
The typical repair costs for addressing a P1520 code related to the Transmission Range Switch Circuit can range from $200 to $500, including parts and labor. However, it is essential to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is recommended to check with local auto repair shops for a more accurate estimate.
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