AutoCodes – Generic – P1D59

P1D59 Code - Sensor Power Supply 1 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 1 Circuit Open or High Resistance, 5 Volt Supply 1 Circuit Shorted to ground, 5 Volt Supply 1 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: P1D59 indicates Sensor Power Supply 1 Circuit Fault.
Common causes: Common causes include 5 Volt Supply 1 Circuit Open or High Resistance, 5 Volt Supply 1 Circuit Shorted to ground, 5 Volt Supply 1 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 1,352

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 P1D59 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 P1D59 - Sensor Power Supply 1 Circuit Fault - AutoCodes.com — P1D59 Code - Sensor Power Supply 1 Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P1D59?

5 Volt Supply 1 Circuit Open or High Resistance
5 Volt Supply 1 Circuit Shorted to ground
5 Volt Supply 1 Circuit Shorted to voltage
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1D59?

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 P1D59 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 P1D59 code?

Need more information on how to fix the P1D59 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P1D59 Chrysler — Sensor Power Supply 1 Circuit Fault
P1D59 Dodge — Sensor Power Supply 1 Circuit Fault
P1D59 Fiat — Sensor Power Supply 1 Circuit Fault
P1D59 Jeep — Sensor Power Supply 1 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 P1D59 Code

1. What does the OBDII code P1D59 mean?

P1D59 indicates a fault in the Sensor Power Supply 1 Circuit, which typically supplies power to various engine sensors.

2. What are the common symptoms of a P1D59 code?

Symptoms may include a check engine light, erratic engine performance, rough idling, or failure of certain sensors to provide accurate data.

3. What causes the P1D59 code to trigger?

Common causes include a damaged wiring harness, a short or open circuit, a faulty sensor, or a malfunction in the Engine Control Module (ECM).

4. Can I drive my car with a P1D59 code?

Driving with this code is not recommended, as it may lead to poor engine performance and potential damage to other components.

5. How is the P1D59 code diagnosed?

A technician will inspect the wiring and connectors, check the sensor power supply circuit voltage, and use a scan tool to monitor sensor readings.

6. What sensors are typically affected by the P1D59 code?

This code usually affects sensors that rely on the Sensor Power Supply 1 circuit, such as the MAF, MAP, or O2 sensors.

7. What repairs are needed to fix a P1D59 code?

Repairs may include fixing or replacing damaged wiring, replacing a faulty sensor, or addressing issues with the ECM.

8. How much does it cost to fix a P1D59 code?

Repair costs can vary depending on the cause but may range from $100 for simple wiring repairs to $500+ if a sensor or ECM replacement is required.

9. Can a low battery cause the P1D59 code?

Yes, a weak or failing battery can sometimes cause voltage-related issues that trigger this code.

10. How can I prevent the P1D59 code from recurring?

Regular maintenance, inspecting wiring and connectors, and promptly addressing check engine light warnings can help prevent this code from reoccurring.