AutoCodes – Dodge – P1D5B Dodge

P1D5B Dodge 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 Dodge 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 1,475

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

What does this mean?

What are the Possible Causes of the DTC P1D5B Dodge?

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 Dodge?

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 Dodge 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.

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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 P1D5B Dodge Code

1. What does the OBDII code P1D5B mean for a Dodge vehicle?

P1D5B indicates a "Sensor Power Supply 3 Circuit Fault," meaning there's an issue with the circuit supplying power to certain sensors in the vehicle.

2. What are the common symptoms of the P1D5B code?

Symptoms may include the check engine light turning on, erratic sensor readings, poor engine performance, or decreased fuel efficiency.

3. What causes the P1D5B code to appear?

Common causes include a damaged or shorted sensor, faulty wiring in the power supply circuit, a blown fuse, or issues with the vehicleâ€™s PCM (Powertrain Control Module).

4. Can I continue driving with a P1D5B code?

While the vehicle might still function, driving with this code can lead to poor performance or further damage to other components, so it is best to address it promptly.

5. How is the P1D5B code diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors in the power supply circuit, and test the affected sensors for proper operation.

6. What repairs can fix the P1D5B code?

Repairs may involve replacing a damaged sensor, repairing or replacing faulty wiring, replacing a blown fuse, or reprogramming/repairing the PCM.

7. Can a weak battery cause the P1D5B code?

Yes, a weak or failing battery can cause voltage issues in the sensor power supply circuit, potentially triggering this code.

8. How much does it cost to fix the P1D5B code?

Repair costs can vary widely, ranging from $100 to $500 or more, depending on the root cause, such as sensor replacement or PCM repair.

9. Can I clear the P1D5B code without fixing the problem?

Clearing the code without addressing the issue might temporarily turn off the check engine light, but the problem will likely return until properly repaired.

10. Is the P1D5B code related to other sensor issues?

Yes, this code can affect multiple sensors relying on the same power supply circuit, leading to additional performance problems if not resolved.