AutoCodes – Cadillac – P1E45 Cadillac

P1E45 Cadillac Code - 14 Volt Power Module Temperature Sensors 1-2 Not Plausible

Quick Answer

The 14 V power module, also referred to as the accessory DC power control module, constantly monitors system temperature to protect against over-heat 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: P1E45 Cadillac indicates 14 Volt Power Module Temperature Sensors 1-2 Not Plausible.
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 799

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
Comments
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Code P1E45 Cadillac Description

The 14 V power module, also referred to as the accessory DC power control module, constantly monitors system temperature to protect against over-heat 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.

OBDII Code P1E45 Cadillac - 14 Volt Power Module Temperature Sensors 1-2 Not Plausible - AutoCodes.com — P1E45 Cadillac Code - 14 Volt Power Module Temperature Sensors 1-2 Not Plausible

What does this mean?

What are the Possible Causes of the DTC P1E45 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 P1E45 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 P1E45 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.

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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.