P159C 2017 GMC Sierra Code - Power Take-Off Remote Engine Shutdown Switch Circuit
Quick Answer
The diagnostic trouble code P159C for a 2017 GMC Sierra relates to the Power Take-Off (PTO) Remote Engine Shutdown Switch Circuit. Common causes include Faulty remote engine shutdown switch, Wiring issues or short circuits in the PTO circuit, Defective PTO control module. 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 2017 GMC Sierra indicates Power Take-Off Remote Engine Shutdown Switch Circuit.
- Common causes
- Common causes include Faulty remote engine shutdown switch, Wiring issues or short circuits in the PTO circuit, Defective PTO control module.
- 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 P159C 2017 GMC Sierra Description
The diagnostic trouble code P159C for a 2017 GMC Sierra relates to the Power Take-Off (PTO) Remote Engine Shutdown Switch Circuit. This code indicates a problem with the circuit that controls the remote engine shutdown switch for the PTO system. The PTO system allows the engine to power auxiliary equipment such as hydraulic pumps, generators, or compressors while the vehicle is stationary.
Common Causes of P159C 2017 GMC Sierra
- Faulty remote engine shutdown switch.
- Wiring issues or short circuits in the PTO circuit.
- Defective PTO control module.
- Corrosion or damage to connectors in the circuit.
- Issues with the vehicle's electrical system.
Symptoms of P159C 2017 GMC Sierra
- Inability to engage or disengage the PTO system.
- Malfunctioning remote engine shutdown switch.
- Warning light on the dashboard indicating a PTO system fault.
- Loss of power or erratic behavior when using auxiliary equipment.
- Vehicle stalling when attempting to activate the PTO system.
How to Fix P159C 2017 GMC Sierra
- Begin by conducting a thorough inspection of the PTO circuit, checking for any visible damage or corrosion.
- Test the remote engine shutdown switch to determine if it is functioning correctly.
- Use a multimeter to check the continuity of the wiring in the PTO circuit.
- Replace any damaged wiring, connectors, or components as needed.
- Clear the diagnostic trouble code from the vehicle's computer and test the PTO system to ensure proper functionality.
Cost to Fix P159C 2017 GMC Sierra
The cost of repairing the Power Take-Off Remote Engine Shutdown Switch Circuit issue can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the cost of parts for this repair could range from $100 to $300, while the labor cost could be between $150 and $300. Overall, the total repair cost could fall between $250 and $600. It's important to note that these are rough estimates, and actual costs may differ based on various factors such as location, labor rates, and the availability of parts. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.
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Frequently Asked Questions about P159C 2017 GMC Sierra Code
1. What does the OBDII code P159C mean on a 2017 GMC Sierra?
P159C indicates an issue with the Power Take-Off (PTO) Remote Engine Shutdown Switch Circuit, which is responsible for controlling engine shutdown during PTO operation.
2. What are the common symptoms of code P159C in a 2017 GMC Sierra?
Symptoms may include the engine shutting off unexpectedly during PTO engagement, the PTO system not functioning, or an illuminated Check Engine Light.
3. What causes the P159C code to appear?
Common causes include a faulty PTO Remote Engine Shutdown Switch, damaged wiring or connectors in the circuit, or a malfunctioning Powertrain Control Module (PCM).
4. How can I diagnose the P159C code in my 2017 GMC Sierra?
Start by visually inspecting the PTO switch, wiring, and connectors for damage. Use a scan tool to monitor the PTO circuit and check if the switch is functioning correctly.
5. Can I drive my 2017 GMC Sierra with the P159C code active?
While the truck may still be drivable, the PTO system might not work as intended, and engine shutdowns could occur unexpectedly. It is recommended to address the issue promptly.
6. How do you fix the P159C code on a 2017 GMC Sierra?
Repairs typically involve replacing a faulty PTO Remote Engine Shutdown Switch, repairing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.
7. How much does it cost to fix the P159C code in a 2017 GMC Sierra?
Repair costs can vary, but replacing the PTO switch or repairing wiring typically ranges from $100 to $300, while PCM replacement can be more expensive.
8. Can a dead battery cause the P159C code to appear?
A weak or dead battery can cause electrical issues, but it is not a common cause of this specific code. However, ensure the battery is fully charged during diagnosis.
9. What tools are needed to diagnose the P159C code?
You’ll need a scan tool capable of reading live data, a multimeter for testing the circuit, and possibly wiring diagrams for the PTO system.
10. Will clearing the P159C code fix the problem?
Clearing the code will reset the Check Engine Light, but if the underlying issue isn’t resolved, the code will return after a few drive cycles.
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