AutoCodes – Generic – P1E4B

P1E4B Code - Control Module Redundant Drive Motor 2 Speed Sensing Circuit

Quick Answer

The drive motor generator position sensor is monitored by the motor control module. Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter 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: P1E4B indicates Control Module Redundant Drive Motor 2 Speed Sensing Circuit.
Common causes: Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter 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 1,965

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 P1E4B Description

The drive motor generator position sensor is monitored by the motor control module. The motor control module monitors the angular position, speed and direction of the drive motor generator based upon the signals of the resolver-type position sensor. The position sensor allows the motor control module to determine the exact position, speed and direction of the drive motor generator. The hybrid powertrain control module also calculates motor speed. This fault is handled inside the power inverter module, often referred to as the drive motor generator power inverter module, and no external circuits are involved.

OBDII Code P1E4B - Control Module Redundant Drive Motor 2 Speed Sensing Circuit - AutoCodes.com — P1E4B Code - Control Module Redundant Drive Motor 2 Speed Sensing Circuit

What does this mean?

What are the Possible Causes of the DTC P1E4B?

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

How to Fix the DTC P1E4B?

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 P1E4B 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 P1E4B code?

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Information for Specific Makes

P1E4B Acura — Slave Cylinder Drive Motor Circuit Open
P1E4B Buick — Control Module Redundant Drive Motor 2 Speed Sensing Circuit
P1E4B Cadillac — Control Module Redundant Drive Motor 2 Speed Sensing Circuit
P1E4B Chevrolet — Control Module Redundant Drive Motor 2 Speed Sensing Circuit
P1E4B GMC — Control Module Redundant Drive Motor 2 Speed Sensing Circuit
P1E4B Honda — Slave Cylinder Drive Motor Circuit Open
P1E4B Saturn — Control Module Redundant Drive Motor 2 Speed Sensing Circuit

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 P1E4B Code

1. What are common symptoms of OBDII code P1E4B related to the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- Common symptoms include issues with the drive motor's speed sensing function, reduced performance, and potential drivability concerns.

2. What can cause OBDII code P1E4B to trigger in the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- The code P1E4B can be triggered by faults in the speed sensing circuit of the redundant drive motor 2, such as wiring issues, sensor malfunctions, or problems with the control module.

3. How serious is OBDII code P1E4B related to the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- The severity of this code can vary, but it should be addressed promptly to ensure proper functioning of the drive motor and related systems.

4. Can I continue to drive my vehicle with OBDII code P1E4B present in the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- It is not recommended to continue driving with this code present, as it may lead to further damage or performance issues with the drive motor.

5. How can I diagnose OBDII code P1E4B in the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- Diagnosis typically involves using a scan tool to retrieve the code, checking the speed sensing circuit components for faults, and testing the control module and sensors for proper operation.

6. Are there any simple repair tips for addressing OBDII code P1E4B associated with the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- Simple repair tips may include checking and repairing any damaged wiring, replacing faulty sensors, or reprogramming the control module if necessary.

7. Can a DIY enthusiast fix OBDII code P1E4B in the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides and procedures.

8. How much does it typically cost to repair OBDII code P1E4B related to the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- Repair costs can vary widely depending on the specific cause of the issue, but they may range from a few hundred to over a thousand dollars for parts and labor.

9. Can resetting the OBDII system clear the P1E4B code in the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- Resetting the OBDII system may temporarily clear the code, but it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

10. Is it necessary to visit a dealership or specialized mechanic to address OBDII code P1E4B in the Control Module Redundant Drive Motor 2 Speed Sensing Circuit?

- While dealerships and specialized mechanics may have the expertise to address this code, independent repair shops or experienced DIY enthusiasts can also effectively diagnose and repair the issue.