AutoCodes – Chevrolet – P159C 2015 Chevrolet Silverado

P159C 2015 Chevrolet Silverado Code - Power Take-Off Remote Engine Shutdown 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: P159C 2015 Chevrolet Silverado indicates Power Take-Off Remote Engine Shutdown 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 234

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P159C 2015 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 control module sends a 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 ECM detects a fault on the PTO remote engine shutdown switch circuit.

OBDII Code P159C 2015 Chevrolet Silverado - Power Take-Off Remote Engine Shutdown Switch Circuit - AutoCodes.com — P159C 2015 Chevrolet Silverado Code - Power Take-Off Remote Engine Shutdown Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P159C 2015 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
Faulty Engine Control Module (ECM)

How to Fix the DTC P159C 2015 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 P159C 2015 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.

Need more information about the P159C 2015 Chevrolet Silverado code?

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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 P159C 2015 Chevrolet Silverado Code

1. What does the OBDII code P159C mean on a 2015 Chevrolet Silverado?

The code P159C indicates an issue with the Power Take-Off (PTO) Remote Engine Shutdown Switch Circuit, which controls the engine shutdown feature associated with PTO operations.

2. What are the common symptoms of P159C on a 2015 Silverado?

Symptoms may include the engine shutting down unexpectedly during PTO operation, the PTO system not engaging, or a check engine light appearing on the dashboard.

3. What causes the P159C code to appear on a 2015 Chevrolet Silverado?

Possible causes include a faulty PTO remote engine shutdown switch, damaged or corroded wiring in the circuit, or a malfunctioning PCM (Powertrain Control Module).

4. Can I drive my 2015 Silverado with the P159C code?

While the truck may still run, driving with this code is not recommended if you rely on the PTO system, as improper function could lead to safety or operational issues.

5. How do I diagnose the P159C code on my Silverado?

Start by inspecting the PTO shutdown switch for damage, checking the wiring and connectors for corrosion or breaks, and using a scan tool to monitor the PTO circuit's operation.

6. How do I fix the P159C code on my 2015 Chevrolet Silverado?

Repairs may involve replacing the PTO remote engine shutdown switch, repairing wiring or connectors, or reprogramming or replacing the PCM if it is faulty.

7. Could a blown fuse cause the P159C code on my Silverado?

Yes, a blown fuse in the PTO circuit could disrupt power to the switch, triggering the P159C code. Inspect and replace any faulty fuses as needed.

8. Does the P159C code require PCM reprogramming on a 2015 Silverado?

PCM reprogramming is not always necessary, but if the PCM has software issues or fails to recognize the PTO system after repairs, reprogramming might be required.

9. How much does it cost to repair a P159C code on a 2015 Silverado?

Repair costs may vary but typically range from $100 to $500, depending on whether the issue involves replacing the switch, repairing wiring, or addressing PCM problems.

10. Can the P159C code be triggered by environmental factors?

Yes, exposure to water, dirt, or extreme temperatures can damage the PTO circuit wiring or connectors, leading to this code.