AutoCodes – Saturn – P1F5D Saturn

P1F5D Saturn Code - 14 Volt Power Module L-Terminal Circuit Low Voltage

Quick Answer

The Engine Control Module (ECM) uses two circuits to control and monitor the state of the 14V power module, often referred to as the accessory DC power control module. Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) circuit poor electrical connection. 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
P1F5D Saturn indicates 14 Volt Power Module L-Terminal Circuit Low Voltage.
Common causes
Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 791
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 26, 2020
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Code P1F5D Saturn Description

The Engine Control Module (ECM) uses two circuits to control and monitor the state of the 14V power module, often referred to as the accessory DC power control module. The control circuit functions much like the L Terminal circuit on a generator equipped vehicle. A high side driver in the ECM applies a duty cycled voltage to the 14V power module. The duty cycle controls the 14V power module output. The ECM monitors the state of the 14V power module control circuit. The ECM will detect faults on the 14V power module control circuit when the vehicle is ON.
OBDII Code P1F5D Saturn - 14 Volt Power Module L-Terminal Circuit Low Voltage - AutoCodes.com
P1F5D Saturn Code - 14 Volt Power Module L-Terminal Circuit Low Voltage

What are the Possible Causes of the DTC P1F5D Saturn?

  • Faulty Engine Control Module (ECM)
  • Engine Control Module (ECM) harness is open or shorted
  • Engine Control Module (ECM) circuit poor electrical connection

How to Fix the DTC P1F5D Saturn?

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 P1F5D Saturn 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 P1F5D Saturn code?

Need more information on how to fix the P1F5D Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1F5D Saturn code diagnosed by a professional: Find a repair shop in your area

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 P1F5D Saturn Code

1. What are common symptoms of OBDII code P1F5D related to the 14 Volt Power Module L-Terminal Circuit Low Voltage in a Saturn?

- Common symptoms include dim or flickering dashboard lights, erratic electrical system behavior, and potential battery draining issues.

2. What are the possible causes of OBDII code P1F5D in a Saturn indicating low voltage in the 14 Volt Power Module L-Terminal Circuit?

- The code can be triggered by a faulty 14 Volt Power Module, damaged wiring or connectors, a weak battery, or issues with the alternator.

3. How can I diagnose OBDII code P1F5D in my Saturn related to the 14 Volt Power Module L-Terminal Circuit Low Voltage?

- Use a diagnostic scanner to read the code, inspect the wiring and connectors for any visible damage, check the battery and alternator voltage output, and test the 14 Volt Power Module.

4. Is it safe to continue driving my Saturn with OBDII code P1F5D indicating low voltage in the 14 Volt Power Module L-Terminal Circuit?

- It is not recommended to drive the vehicle with this code present, as it can lead to electrical system malfunctions and potential breakdowns.

5. Can I reset OBDII code P1F5D in my Saturn related to the 14 Volt Power Module L-Terminal Circuit Low Voltage?

- You can reset the code using a diagnostic scanner, but it is crucial to address the underlying issue causing the low voltage to prevent the code from reoccurring.

6. What are some repair tips for fixing OBDII code P1F5D in a Saturn linked to the 14 Volt Power Module L-Terminal Circuit Low Voltage?

- Repair tips include checking and repairing any damaged wiring or connectors, testing and possibly replacing the 14 Volt Power Module, ensuring the battery and alternator are in good condition, and clearing the code after repairs are completed.

7. How much does it typically cost to repair OBDII code P1F5D in a Saturn due to low voltage in the 14 Volt Power Module L-Terminal Circuit?

- The repair costs can vary depending on the exact cause of the issue, but it may involve expenses for parts such as the 14 Volt Power Module, wiring repairs, and labor charges.

8. Will OBDII code P1F5D in a Saturn related to the 14 Volt Power Module L-Terminal Circuit Low Voltage affect the vehicle's performance?

- Yes, this code can lead to issues with the vehicle's electrical system, potentially causing performance issues and reliability concerns if left unresolved.

9. How urgent is it to address OBDII code P1F5D indicating low voltage in the 14 Volt Power Module L-Terminal Circuit of a Saturn?

- It is essential to address this code promptly to prevent further damage to the electrical system, avoid potential breakdowns, and ensure the vehicle operates safely.

10. Can a DIY enthusiast repair OBDII code P1F5D in a Saturn related to the 14 Volt Power Module L-Terminal Circuit Low Voltage?

- Depending on the individual's skill level, knowledge, and access to tools, some DIY enthusiasts may be able to diagnose and repair this issue themselves. However, complex electrical repairs are best handled by professionals.

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