AutoCodes – Generic – P1D5B

P1D5B Code - Sensor Power Supply 3 Circuit Fault

Quick Answer

This diagnostic checks for the electrical faults of the sensor power supplies, sensor module or the connecting wiring. Common causes include 5 Volt Supply 3 Circuit Open or High Resistance, 5 Volt Supply 3 Circuit Shorted to ground, 5 Volt Supply 3 Circuit Shorted to voltage. 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: P1D5B indicates Sensor Power Supply 3 Circuit Fault.
Common causes: Common causes include 5 Volt Supply 3 Circuit Open or High Resistance, 5 Volt Supply 3 Circuit Shorted to ground, 5 Volt Supply 3 Circuit Shorted to voltage.
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 4,600

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1D5B Description

This diagnostic checks for the electrical faults of the sensor power supplies, sensor module or the connecting wiring. These electrical faults may include short to battery, short to ground and open circuit. There are three different sensor power supplies, named VS1, VS2 and VS3 which are provided by an integrated circuit internal to the Transmission Control Module (TCM). The 1st-3rd actuator position sensor, the 5th-RV actuator position sensor and the odd clutch position sensor are supplied by VS1. The even clutch pressure sensor, the 2nd-4th actuator position sensor, the 6th actuator position sensor and the gate select position sensor are supplied by VS2. The hydraulic pressure sensor, the odd and even clutch speed sensors and the park position sensor are supplied by VS3. A self diagnostic is performed by the integrated circuit on each power supply. The diagnostic continuously checks the result of the internal integrated circuit test by reading an internal register via SPI communication interface. If it indicates an electrical fault on at least one of the three supplies, then the diagnostic will set a fault in the TCM.

OBDII Code P1D5B - Sensor Power Supply 3 Circuit Fault - AutoCodes.com — P1D5B Code - Sensor Power Supply 3 Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P1D5B?

5 Volt Supply 3 Circuit Open or High Resistance
5 Volt Supply 3 Circuit Shorted to ground
5 Volt Supply 3 Circuit Shorted to voltage
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1D5B?

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 P1D5B 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 P1D5B code?

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Information for Specific Makes

P1D5B Chrysler — Sensor Power Supply 3 Circuit Fault
P1D5B Dodge — Sensor Power Supply 3 Circuit Fault
P1D5B Fiat — Sensor Power Supply 3 Circuit Fault
P1D5B Jeep — Sensor Power Supply 3 Circuit Fault

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 P1D5B Code

1. What are the common symptoms of OBDII code P1D5B (Sensor Power Supply 3 Circuit Fault)?

- Common symptoms include engine misfires, poor fuel efficiency, rough idle, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code P1D5B?

- The code P1D5B may be triggered by issues such as a faulty sensor, damaged wiring or connectors, a blown fuse, or a malfunctioning power supply module.

3. How serious is OBDII code P1D5B?

- While the severity can vary, it is recommended to address this code promptly to prevent potential issues with engine performance and emissions.

4. How can I diagnose the Sensor Power Supply 3 Circuit Fault associated with code P1D5B?

- Diagnosis typically involves using a diagnostic scanner to read the code and pinpoint the source of the fault by testing the sensor, wiring, connectors, and power supply circuit.

5. What are some repair tips for OBDII code P1D5B?

- Repair may involve replacing the faulty sensor, repairing damaged wiring or connectors, checking and replacing fuses if necessary, and addressing any power supply module issues.

6. Can I drive my vehicle with OBDII code P1D5B active?

- It is generally not recommended to drive with an active fault code, as it can lead to further damage and potential safety hazards. It is best to address the issue promptly.

7. How much does it typically cost to repair OBDII code P1D5B?

- The cost of repair can vary depending on the specific cause of the fault, but it may involve parts replacement, labor costs, and diagnostic fees.

8. Will resetting the fault code clear OBDII code P1D5B permanently?

- Resetting the fault code may clear the Check Engine Light temporarily, but if the underlying issue is not resolved, the code is likely to reappear.

9. What should I do if OBDII code P1D5B keeps coming back after repairs?

- If the code persists after repairs, further diagnostics may be needed to identify any underlying issues that were not initially addressed.

10. Can a DIY enthusiast fix OBDII code P1D5B at home?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to address this code by following diagnostic procedures and making necessary repairs. However, professional help is recommended if unsure.