AutoCodes – Chevrolet – P148E 2021 Chevrolet Silverado

P148E 2021 Chevrolet Silverado Code - EVAP Purge Pump Voltage Sensor Low Voltage

Quick Answer

Purge capacity is being reduced by technologies that improve fuel economy. 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: P148E 2021 Chevrolet Silverado indicates EVAP Purge Pump Voltage Sensor Low 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.

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Code Popularity 441

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P148E 2021 Chevrolet Silverado Description

Purge capacity is being reduced by technologies that improve fuel economy. The Evaporative Emission Purge Pump is used to purge stored vapors from the Evaporative Emission Canister and is required to increase the purge volumes to meet LEV 3 Evaporative Emission requirements. The Evaporative Emission Purge Pump has an integral pressure sensor for controlling purge vapors from the canister. The Engine Control Module (ECM) monitors the Evaporative Emission Purge Pump, and the Diagnostic Trouble Code (DTC) will be set when the EVAP Purge Pump Voltage is less than 3.5 V for greater than 1 s.

OBDII Code P148E 2021 Chevrolet Silverado - EVAP Purge Pump Voltage Sensor Low Voltage - AutoCodes.com — P148E 2021 Chevrolet Silverado Code - EVAP Purge Pump Voltage Sensor Low Voltage

What does this mean?

What are the Possible Causes of the DTC P148E 2021 Chevrolet Silverado?

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 P148E 2021 Chevrolet Silverado?

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 P148E 2021 Chevrolet Silverado 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.

Need more information about the P148E 2021 Chevrolet Silverado code?

Need more information on how to fix the P148E 2021 Chevrolet Silverado code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P148E 2021 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P148E in a 2021 Chevrolet Silverado?

The common symptoms of code P148E include poor engine performance, rough idling, decreased fuel efficiency, and illuminated check engine light.

2. What does the OBDII code P148E in a 2021 Chevrolet Silverado indicate?

Code P148E indicates a low voltage condition in the EVAP purge pump voltage sensor of the vehicle's emission control system.

3. What are the possible causes of OBDII code P148E in a 2021 Chevrolet Silverado?

Possible causes of code P148E include a faulty EVAP purge pump, damaged wiring or connectors related to the purge pump voltage sensor, or a defective PCM (powertrain control module).

4. How can I diagnose the cause of OBDII code P148E in my 2021 Chevrolet Silverado?

Diagnosing code P148E typically involves using a scan tool to retrieve the code, inspecting the EVAP purge pump and related components for damage, and testing the voltage sensor and wiring for proper functionality.

5. Can I continue driving my 2021 Chevrolet Silverado with OBDII code P148E present?

It is not recommended to continue driving with code P148E present, as it can lead to further damage to the vehicle's emission control system and potentially worsen engine performance.

6. How can I repair OBDII code P148E in my 2021 Chevrolet Silverado?

Repairing code P148E may involve replacing the EVAP purge pump, repairing or replacing damaged wiring or connectors, or reprogramming the PCM to address the low voltage sensor issue.

7. Is it safe to reset the check engine light after fixing OBDII code P148E in my 2021 Chevrolet Silverado?

Yes, it is safe to reset the check engine light after fixing code P148E. This can be done using a scan tool to clear the trouble code and turn off the warning light.

8. How much does it typically cost to repair OBDII code P148E in a 2021 Chevrolet Silverado?

The cost of repairing code P148E can vary depending on the specific cause of the issue, but it may range from $200 to $500 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P148E in a 2021 Chevrolet Silverado?

While some DIY enthusiasts may have the skills to address code P148E, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

10. How often does OBDII code P148E occur in a 2021 Chevrolet Silverado?

Code P148E is a relatively uncommon OBDII code in a 2021 Chevrolet Silverado, but it can still occur due to various factors affecting the EVAP purge pump voltage sensor.