AutoCodes – Chevrolet – P159D 2017 Chevrolet Silverado

P159D 2017 Chevrolet Silverado Code - Power Take-Off Remote Mode Switch Circuit

Quick Answer

The Power Take-Off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. Common causes include Faulty Power Take-Off (PTO) Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off Control Module 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: P159D 2017 Chevrolet Silverado indicates Power Take-Off Remote Mode Switch Circuit.
Common causes: Common causes include Faulty Power Take-Off (PTO) Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off Control Module 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.

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Code Popularity 265

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 Aug 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P159D 2017 Chevrolet Silverado Description

The Power Take-Off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The Engine Control Module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the Power Take-Off Module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in response to signals from the PTO switch or remote.
The Diagnostic Trouble Code (DTC) will be set when the Power Take-Off Control Module detects a signal mismatch between the remote engine shut-off signal and the PTO engine shutdown signal.

OBDII Code P159D 2017 Chevrolet Silverado - Power Take-Off Remote Mode Switch Circuit - AutoCodes.com — P159D 2017 Chevrolet Silverado Code - Power Take-Off Remote Mode Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P159D 2017 Chevrolet Silverado?

Faulty Power Take-Off (PTO) Control Module
Power Take-Off Control Module harness is open or shorted
Power Take-Off Control Module circuit poor electrical connection

How to Fix the DTC P159D 2017 Chevrolet Silverado?

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 P159D 2017 Chevrolet Silverado 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 P159D 2017 Chevrolet Silverado Code

1. What does the OBDII code P159D mean on a 2017 Chevrolet Silverado?

The P159D code indicates an issue with the Power Take-Off (PTO) Remote Mode Switch Circuit, which is used to control auxiliary equipment like winches or hydraulic systems.

2. What are the common symptoms of the P159D code?

Symptoms may include the PTO system not engaging, a warning light on the dashboard, or a message on the driver information center.

3. What causes the P159D code to appear?

The code can be triggered by a faulty PTO switch, damaged wiring or connectors in the PTO circuit, or a malfunctioning control module.

4. How can I troubleshoot the P159D code on my Silverado?

Start by inspecting the PTO switch and its wiring for visible damage or loose connections. Use a multimeter to check for proper voltage and continuity in the circuit.

5. Can a bad PTO switch cause the P159D code?

Yes, a malfunctioning PTO switch is a common cause of this code and should be tested or replaced if found defective.

6. Is it safe to drive with the P159D code active?

Driving is generally safe, but the PTO system may not function properly, which could impact auxiliary equipment operation.

7. How do you fix the P159D code on a 2017 Chevrolet Silverado?

Repairs may include replacing the PTO switch, repairing damaged wiring or connectors, or reprogramming/updating the control module.

8. Can clearing the P159D code with a scanner fix the problem?

Clearing the code may turn off the warning temporarily, but the underlying issue must be resolved to prevent the code from returning.

9. How much does it cost to repair the P159D code?

Repair costs vary depending on the exact issue, but replacing a PTO switch typically costs $50-$150, while wiring repairs or module replacements may be more expensive.

10. What tools are needed to diagnose the P159D code?

You'll need an OBDII scanner, a multimeter for electrical testing, and possibly a wiring diagram for the PTO circuit.