P1390 Cadillac Code - Wheel Speed Sensor 1 G-Sensor Circuit
Quick Answer
The P1390 diagnostic trouble code (DTC) for Cadillac vehicles specifically refers to an issue with the Wheel Speed Sensor 1 G-Sensor Circuit. Common causes include Damaged or corroded wiring in the wheel speed sensor circuit, Faulty wheel speed sensor, Issues with the ECU receiving and interpreting wheel speed data. 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
- P1390 Cadillac indicates Wheel Speed Sensor 1 G-Sensor Circuit.
- Common causes
- Common causes include Damaged or corroded wiring in the wheel speed sensor circuit, Faulty wheel speed sensor, Issues with the ECU receiving and interpreting wheel speed data.
- 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 P1390 Cadillac Description
The P1390 diagnostic trouble code (DTC) for Cadillac vehicles specifically refers to an issue with the Wheel Speed Sensor 1 G-Sensor Circuit. This code indicates that there is a problem with the circuit that is responsible for monitoring the wheel speed sensor, which plays a crucial role in the vehicle's anti-lock braking system (ABS) and traction control system.
Common Causes of P1390 Cadillac
- Damaged or corroded wiring in the wheel speed sensor circuit
- Faulty wheel speed sensor
- Issues with the ECU receiving and interpreting wheel speed data
- Loose or disconnected connectors in the sensor circuit
- Physical damage to the wheel speed sensor, such as impact from road debris
Symptoms of P1390 Cadillac
- Illuminated ABS or traction control warning lights on the dashboard
- Loss of ABS functionality, leading to longer stopping distances during braking
- Traction control system engaging unexpectedly or not working properly
- Grinding or unusual noises coming from the wheels during braking
- Poor handling or stability when driving, especially on slippery surfaces
How to Fix P1390 Cadillac
- Begin by visually inspecting the wiring and connectors in the wheel speed sensor circuit for any signs of damage or corrosion.
- Test the wheel speed sensor using a multimeter to check for proper resistance and signal output.
- Replace the wheel speed sensor if it is found to be faulty or damaged.
- Clear the diagnostic trouble codes from the vehicle's ECU using a scan tool.
- Test drive the vehicle to ensure that the ABS and traction control systems are functioning correctly after the repair.
Cost to Fix P1390 Cadillac
The cost of repairing a P1390 code related to the Wheel Speed Sensor 1 G-Sensor Circuit can vary depending on the specific cause of the issue and the parts and labor rates in your area. In general, the cost of replacing a wheel speed sensor and addressing any associated wiring or connector issues can range from $150 to $500.
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