Engine-CodesGeneric – P1E30

P1E30 Code - Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage

Quick Answer

The P1E30 diagnostic trouble code refers to an issue with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit, specifically indicating a low voltage condition. Common causes include Faulty auxiliary transmission fluid pump, Defective current sensor, Damaged or corroded wiring or connectors. 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
P1E30 indicates Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty auxiliary transmission fluid pump, Defective current sensor, Damaged or corroded wiring or connectors.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1E30 Description

The P1E30 diagnostic trouble code refers to an issue with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit, specifically indicating a low voltage condition. This sensor is responsible for monitoring the current of the auxiliary transmission fluid pump, which helps ensure proper lubrication and cooling of the transmission components. A low voltage reading can indicate a problem with the sensor itself, wiring issues, or a malfunction in the pump system, which can lead to reduced performance, efficiency, and potentially cause damage to the transmission over time.

OBDII Code P1E30 - Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage
P1E30 Code - Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage

Common Causes of P1E30

  1. Faulty auxiliary transmission fluid pump
  2. Defective current sensor
  3. Damaged or corroded wiring or connectors
  4. Low transmission fluid levels or poor quality fluid
  5. Electrical issues within the transmission control module

Symptoms of P1E30

  1. Illuminated check engine light on the dashboard
  2. Transmission slipping or shifting issues
  3. Decreased fuel efficiency
  4. Transmission overheating
  5. Harsh or delayed shifting

How to Fix P1E30

  1. Diagnose the issue by using a scan tool to monitor sensor data and check for fault codes.
  2. Inspect the wiring and connectors for any signs of damage or corrosion, repairing or replacing as necessary.
  3. Test the auxiliary transmission fluid pump and current sensor for proper operation, replacing any faulty components.
  4. Perform a transmission fluid flush and refill with the manufacturer-recommended fluid.
  5. Clear the fault codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1E30

The cost for repairing a P1E30 code can vary depending on the specific cause of the issue and the vehicle make and model. Generally, the cost can range from $200 to $600 for parts and labor. It's recommended to consult with a professional mechanic for an accurate estimate based on your vehicle's specific requirements. labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour; however, rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

Need more information about the P1E30 code?

Need more information on how to fix the P1E30 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E30 code diagnosed by a professional: Find a repair shop in your area

Code P1E30 Information for Specific Makes

  • P1E30 Buick — Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage
  • P1E30 Cadillac — Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage
  • P1E30 Chevrolet — Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage
  • P1E30 GMC — Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage
  • P1E30 Saturn — Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage
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 P1E30 Code

What does the OBDII code P1E30 mean?

P1E30 indicates an issue with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit, specifically detecting low voltage.

What are the common symptoms of code P1E30?

Symptoms may include transmission overheating, erratic shifting, reduced fuel efficiency, or activation of the check engine light.

What causes the P1E30 code to appear?

The code can be triggered by a faulty current sensor, damaged wiring, poor electrical connections, or a malfunctioning auxiliary transmission fluid pump.

How is the P1E30 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connections, and test the auxiliary transmission fluid pump and current sensor for proper function.

Can I drive my car with the P1E30 code active?

Driving with this code is not recommended, as it may lead to transmission damage or overheating if the auxiliary pump is not functioning correctly.

How do you fix the P1E30 code?

Repairs may include replacing the current sensor, repairing damaged wiring, cleaning corroded connections, or replacing the auxiliary transmission fluid pump if it's defective.

What tools are needed to fix the P1E30 code?

A scan tool, multimeter, and basic repair tools are typically needed to diagnose and repair this issue.

Is the P1E30 code specific to certain vehicles?

Yes, P1E30 is most commonly associated with hybrid or electric vehicles that use an auxiliary transmission fluid pump system.

How much does it cost to repair the P1E30 code?

Repair costs vary but can range from $150 to $600 depending on whether the issue involves wiring repairs or pump replacement.

Can a low transmission fluid level cause the P1E30 code?

Low transmission fluid is unlikely to directly cause this code but may exacerbate related transmission issues if not addressed.

Discuss the causes and fixes for P1E30 OBDII Code

Code P1E30 comments

No comments found for this page.