P146D Buick Code - EVAP Purge System Pressure Sensor Circuit Low Voltage
Quick Answer
The P146D Buick code indicates a problem with the EVAP purge system pressure sensor circuit, specifically a low voltage situation. Common causes include Faulty EVAP purge system pressure sensor, Damaged wiring or connectors in the sensor circuit, Leaks in the EVAP system. 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
- P146D Buick indicates EVAP Purge System Pressure Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty EVAP purge system pressure sensor, Damaged wiring or connectors in the sensor circuit, Leaks in the EVAP system.
- 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 P146D Buick Description
The P146D Buick code indicates a problem with the EVAP purge system pressure sensor circuit, specifically a low voltage situation. The EVAP system is responsible for capturing and storing fuel vapors to prevent them from escaping into the atmosphere. The purge system pressure sensor measures the pressure in the system and sends this information to the engine control module (ECM). A low voltage reading from this sensor can indicate issues with the sensor itself, wiring, or the EVAP system as a whole.
Common Causes of P146D Buick
- Faulty EVAP purge system pressure sensor
- Damaged wiring or connectors in the sensor circuit
- Leaks in the EVAP system
- Malfunctioning ECM
- Improperly sealed gas cap
Symptoms of P146D Buick
- Check engine light illuminated on the dashboard
- Decreased fuel efficiency
- Rough idling or stalling
- Strong fuel odor
- Failed emissions test
How to Fix P146D Buick
- Diagnose the issue using a scan tool to confirm the P146D code and pinpoint the exact cause.
- Inspect the EVAP system for leaks or damage.
- Test the EVAP purge system pressure sensor and its circuit for proper functionality.
- Replace the sensor if it is faulty, repair any damaged wiring, and address any leaks in the system.
- Clear the code from the ECM memory and perform a test drive to ensure the issue has been resolved.
Cost to Fix P146D Buick
The cost of repairing a P146D Buick code can vary depending on the specific cause of the issue. On average, the parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Keep in mind that these are rough estimates and actual costs may vary based on the location, vehicle make and model, and labor rates at the auto repair shop. It's recommended to consult with a professional mechanic for a more accurate cost estimate.
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