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P1E2A Cadillac Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage

Quick Answer

The P1E2A diagnostic trouble code (DTC) indicates a problem with the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit in Cadillac vehicles. Common causes include Faulty auxiliary transmission fluid pump or internal pump failure, Damaged or corroded wiring in the current sensor circuit, Malfunctioning current sensor that fails to provide accurate voltage readings. 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
P1E2A Cadillac indicates Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty auxiliary transmission fluid pump or internal pump failure, Damaged or corroded wiring in the current sensor circuit, Malfunctioning current sensor that fails to provide accurate voltage readings.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 19, 2024
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Code P1E2A Cadillac Description

The P1E2A diagnostic trouble code (DTC) indicates a problem with the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit in Cadillac vehicles. This code specifically points to a low voltage condition detected in the current sensor circuit, which is responsible for monitoring the electrical current flowing to the auxiliary transmission fluid pump. The auxiliary pump plays a crucial role in maintaining proper hydraulic pressure within the transmission system, especially in vehicles equipped with automatic transmissions that require additional cooling or lubrication under specific conditions.

OBDII Code P1E2A Cadillac - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
P1E2A Cadillac Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage

Common Causes of P1E2A Cadillac

  1. Faulty auxiliary transmission fluid pump or internal pump failure.
  2. Damaged or corroded wiring in the current sensor circuit.
  3. Malfunctioning current sensor that fails to provide accurate voltage readings.
  4. Poor electrical connections or loose terminals at the sensor or pump.
  5. Software issues within the vehicle's transmission control module (TCM) that affect sensor readings.

Symptoms of P1E2A Cadillac

  1. Erratic or harsh shifting of gears during acceleration or deceleration.
  2. Transmission overheating, indicated by warning lights or temperature gauge readings.
  3. Slipping gears, where the transmission unexpectedly disengages or fails to engage properly.
  4. Reduced fuel efficiency due to improper transmission operation.
  5. Illuminated check engine light or transmission warning light on the dashboard.

How to Fix P1E2A Cadillac

  1. Diagnostic Testing: Begin with a thorough diagnostic scan to confirm the P1E2A code and check for any related codes that may provide additional context.
  2. Visual Inspection: Inspect the wiring harness and connectors associated with the auxiliary transmission fluid pump and current sensor for signs of damage, corrosion, or loose connections.
  3. Sensor and Pump Testing: Test the current sensor for proper operation using a multimeter to measure voltage and resistance. If the sensor is faulty, replace it. Additionally, check the auxiliary pump for functionality.
  4. Wiring Repair/Replacement: If damaged wiring is found, repair or replace the affected sections to ensure proper electrical flow.
  5. Reprogramming/Resetting TCM: If necessary, reprogram or reset the transmission control module to clear any stored codes and ensure proper communication with the new or repaired components.

Cost to Fix P1E2A Cadillac

The typical repair costs for addressing the P1E2A code can vary widely based on the specific diagnosis, parts required, and labor involved. On average, you might expect to pay between $200 and $800 for repairs, which could include parts such as a new auxiliary pump or current sensor, as well as labor costs. Labor rates at auto repair shops can range from $80 to $150 per hour, depending on location, vehicle make and model, and engine type. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer lower rates. For a more precise estimate, it's advisable to check local rates and obtain quotes from multiple repair facilities.

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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 P1E2A Cadillac Code

1. What are the common symptoms of OBDII code P1E2A in a Cadillac related to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage?

- Common symptoms include transmission shifting issues, illuminated warning lights on the dashboard, and reduced vehicle performance.

2. What can cause the OBDII code P1E2A to trigger in a Cadillac?

- The code P1E2A in a Cadillac is often triggered by a malfunction in the auxiliary transmission fluid pump phase U current sensor circuit, leading to low voltage readings.

3. How serious is the OBDII code P1E2A in a Cadillac?

- The code P1E2A should be addressed promptly to prevent potential transmission damage and ensure the vehicle operates safely and efficiently.

4. What are some possible repair tips for resolving the OBDII code P1E2A in a Cadillac?

- Repair tips may include checking the wiring and connections related to the auxiliary transmission fluid pump phase U current sensor, testing the sensor for proper functionality, and replacing any faulty components as needed.

5. Can I drive my Cadillac with the OBDII code P1E2A present?

- It is not recommended to drive the vehicle with the OBDII code P1E2A present, as it may lead to further damage to the transmission system and compromise driving safety.

6. How can a professional diagnose the OBDII code P1E2A in a Cadillac?

- A professional diagnostic scan tool can be used to retrieve the specific fault code, followed by thorough inspection of the auxiliary transmission fluid pump phase U current sensor circuit and related components.

7. Are there any recalls or technical service bulletins related to the OBDII code P1E2A for Cadillac vehicles?

- It's advisable to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to the OBDII code P1E2A specific to Cadillac vehicles.

8. Will resetting the OBDII system clear the code P1E2A in a Cadillac?

- Resetting the OBDII system may temporarily clear the code P1E2A, but it is crucial to address the underlying issue causing the fault code to prevent its recurrence.

9. Is it possible to prevent the OBDII code P1E2A from occurring in a Cadillac?

- Regular maintenance, including checking the transmission system components and addressing any issues promptly, can help prevent the occurrence of the OBDII code P1E2A in a Cadillac.

10. How much does it typically cost to repair the OBDII code P1E2A in a Cadillac?

- The cost of repairing the OBDII code P1E2A in a Cadillac can vary depending on the extent of the issue, parts needed for replacement, and labor rates at the repair facility. It's recommended to obtain quotes from trusted mechanics or dealerships for an accurate estimate.

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