AutoCodes – Chevrolet – P1E46 Chevrolet

P1E46 Chevrolet Code - 14 Volt Power Module Temperature Sensor 1 High Temperature Sensing Circuit

Quick Answer

The 14 V power module, also called the accessory DC power control module, constantly monitors system temperature to protect against overheat conditions. Common causes include Program 14 V Power Module, Faulty 14 V Power Module, 14 V Power Module harness is open or shorted. 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: P1E46 Chevrolet indicates 14 Volt Power Module Temperature Sensor 1 High Temperature Sensing Circuit.
Common causes: Common causes include Program 14 V Power Module, Faulty 14 V Power Module, 14 V Power Module harness is open or shorted.
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 1,070

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E46 Chevrolet Description

The 14 V power module, also called the accessory DC power control module, constantly monitors system temperature to protect against overheat conditions. The module also monitors the function of the temperature sensors. These sensors are internal to the 14 V power module and are not serviced separately from the control module.
The 14 V power module is an air cooled component. The 14 V power module vent fan is controlled by the hybrid powertrain control module 2.

OBDII Code P1E46 Chevrolet - 14 Volt Power Module Temperature Sensor 1 High Temperature Sensing Circuit - AutoCodes.com — P1E46 Chevrolet Code - 14 Volt Power Module Temperature Sensor 1 High Temperature Sensing Circuit

What does this mean?

What are the Possible Causes of the DTC P1E46 Chevrolet?

Program 14 V Power Module
Faulty 14 V Power Module
14 V Power Module harness is open or shorted
14 V Power Module circuit poor electrical connection

How to Fix the DTC P1E46 Chevrolet?

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 P1E46 Chevrolet 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 P1E46 Chevrolet code?

Need more information on how to fix the P1E46 Chevrolet 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 P1E46 Chevrolet Code

What does the OBDII code P1E46 mean on a Chevrolet?

The P1E46 code indicates an issue with the 14 Volt Power Module Temperature Sensor 1 High Temperature Sensing Circuit, which monitors the temperature of the 14V power module.

What are the common symptoms of the P1E46 code?

Symptoms may include the check engine light turning on, reduced charging system performance, trouble starting the vehicle, or overheating of the power module.

What causes the P1E46 code to appear?

Common causes include a faulty temperature sensor, damaged wiring or connectors in the sensor circuit, or an issue within the 14V power module itself.

How do I diagnose the P1E46 code?

Diagnosis involves scanning for codes with an OBDII scanner, visually inspecting the wiring and connectors, and testing the temperature sensor and power module for proper functionality.

Can I drive my Chevrolet with the P1E46 code?

While it may be possible to drive, it is not recommended as the issue could lead to further damage to the 14V power module or related components.

How do I fix the P1E46 code?

Repairs may involve replacing the faulty temperature sensor, repairing damaged wiring or connectors, or replacing the 14V power module if necessary.

What tools are needed to fix the P1E46 code?

You may need an OBDII scanner, a multimeter for electrical testing, and basic tools like screwdrivers and wrenches for component replacement.

How much does it cost to repair the P1E46 code?

The cost depends on the exact issue, but sensor replacements typically range from $50-$200, while a 14V power module replacement can cost significantly more, including labor.

Can a software issue cause the P1E46 code?

Yes, a software issue in the vehicleâ€™s powertrain control module (PCM) could occasionally cause this code and may require a software update or reprogramming.

Is the P1E46 code specific to Chevrolet vehicles?

While P1E46 is most commonly associated with Chevrolet vehicles, it may also appear in other GM vehicles that use similar systems. Always consult your specific vehicleâ€™s manual.