AutoCodes – Cadillac – P1E46 Cadillac

P1E46 Cadillac 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 Cadillac 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 811

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 Cadillac 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 Cadillac - 14 Volt Power Module Temperature Sensor 1 High Temperature Sensing Circuit - AutoCodes.com — P1E46 Cadillac 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 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac code?

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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 Cadillac Code

1. What does the OBDII code P1E46 mean on a Cadillac?

The P1E46 code indicates an issue with the 14 Volt Power Module Temperature Sensor 1, where the sensor is detecting abnormally high temperatures or has a circuit malfunction.

2. What are the common symptoms of the P1E46 code?

Symptoms may include the Check Engine Light turning on, reduced charging system performance, possible battery charging issues, or abnormal electrical behavior in the vehicle.

3. What causes the P1E46 code to appear?

Common causes include a faulty 14 Volt Power Module Temperature Sensor, damaged wiring or connectors in the sensor circuit, or issues with the power module itself.

4. Can the P1E46 code cause driveability issues?

While it may not directly affect drivability, it can lead to electrical system malfunctions, which could eventually impact vehicle performance if left unresolved.

5. How can I diagnose the P1E46 code?

Diagnose by inspecting the sensor, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.

6. Is it safe to drive with the P1E46 code?

It may be safe to drive temporarily, but ignoring the issue could lead to charging system failure or electrical problems, potentially leaving you stranded.

7. How do I fix the P1E46 code on a Cadillac?

Repairs can include replacing the temperature sensor, repairing damaged wiring or connectors, or replacing the 14 Volt Power Module if itâ€™s defective.

8. How much does it cost to fix the P1E46 code?

Repair costs vary but typically range from $100 to $500, depending on whether the sensor, wiring, or the power module needs replacement.

9. Can a low battery cause the P1E46 code?

A low or failing battery is not a direct cause but may exacerbate electrical issues, making it important to check the battery health during diagnosis.

10. Will clearing the P1E46 code solve the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code will likely return. Proper diagnosis and repair are necessary.