P146E Code - EVAP Purge System Pressure Sensor Circuit High Voltage
Quick Answer
The EVAP Purge System Pressure Sensor is a 3-wire piezo-resistive pressure transducer integrated into the Evaporative Emission Purge Pump. Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump circuit poor electrical connection. 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
- P146E indicates EVAP Purge System Pressure Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump circuit poor electrical connection.
- 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.
Code P146E Description
What are the Possible Causes of the DTC P146E?
- Faulty Evaporative Emission Purge Pump
- Evaporative Emission Purge Pump harness is open or shorted
- Evaporative Emission Purge Pump circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P146E?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P146E code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P146E Buick — EVAP Purge System Pressure Sensor Circuit High Voltage
- P146E Cadillac — EVAP Purge System Pressure Sensor Circuit High Voltage
- P146E Chevrolet — EVAP Purge System Pressure Sensor Circuit High Voltage
- P146E GMC — EVAP Purge System Pressure Sensor Circuit High Voltage
Frequently Asked Questions about P146E Code
What does the OBDII code P146E mean?
Code P146E indicates that the EVAP Purge System Pressure Sensor Circuit is experiencing high voltage, which may affect the vehicle’s emissions control system.
What are the common symptoms of code P146E?
Symptoms include an illuminated check engine light, increased fuel odor, poor fuel efficiency, and possibly difficulty starting the vehicle.
What causes code P146E to trigger?
Common causes include a faulty EVAP purge system pressure sensor, wiring issues like shorts or corrosion, or a malfunctioning EVAP purge valve.
How can I diagnose code P146E?
Start by checking the EVAP purge system pressure sensor and its wiring for damage or corrosion. Use a multimeter to verify voltage readings and inspect the EVAP purge valve for proper operation.
Can I drive my car with code P146E?
While the vehicle may still be drivable, ignoring this code can lead to increased emissions, reduced fuel efficiency, and potential damage to the EVAP system.
How do I fix code P146E?
Repairs typically involve replacing the EVAP purge system pressure sensor, repairing damaged wiring, or replacing a faulty EVAP purge valve.
How much does it cost to repair code P146E?
The repair costs vary depending on the issue but typically range between $100 and $300, including parts and labor.
Can a loose gas cap cause code P146E?
A loose gas cap is unlikely to directly cause P146E, but it can trigger other EVAP-related codes. Always check the gas cap when diagnosing EVAP issues.
How can I prevent code P146E?
Regular maintenance, such as inspecting the EVAP system components and ensuring electrical connections are clean and secure, can help prevent this code.
Does code P146E affect emissions testing?
Yes, code P146E can cause your vehicle to fail an emissions test due to issues with the EVAP system.
Discuss the causes and fixes for P146E OBDII Code
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