C158C 2017 Chevrolet Silverado Code - Steering Assist Hydraulic Pressure Out of Range
Quick Answer
The Active Hydraulic Assist Power Steering Control Module uses a pressure sensor to measure the hydraulic pressure in the left and right chambers of steering gear. Common causes include Faulty Steering Gear Pressure Sensor, Steering Gear Pressure Sensor harness is open or shorted, Steering Gear Pressure Sensor 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
- C158C 2017 Chevrolet Silverado indicates Steering Assist Hydraulic Pressure Out of Range.
- Common causes
- Common causes include Faulty Steering Gear Pressure Sensor, Steering Gear Pressure Sensor harness is open or shorted, Steering Gear Pressure Sensor 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.
Code C158C 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC C158C 2017 Chevrolet Silverado?
- Faulty Steering Gear Pressure Sensor
- Steering Gear Pressure Sensor harness is open or shorted
- Steering Gear Pressure Sensor circuit poor electrical connection
- Faulty Power Steering Control Module
How to Fix the DTC C158C 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 C158C 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.
Need more information about the C158C 2017 Chevrolet Silverado code?
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Frequently Asked Questions about C158C 2017 Chevrolet Silverado Code
1. What does the OBDII code C158C mean on a 2017 Chevrolet Silverado?
The code C158C indicates an issue with the steering assist hydraulic pressure being out of range, which affects the power steering system's performance.
2. What are the common symptoms of the C158C code on a Chevy Silverado?
Symptoms may include reduced or no power steering assist, difficulty steering, and a warning message or light on the dashboard.
3. What causes the C158C code to appear on a 2017 Silverado?
Common causes include a malfunctioning hydraulic pressure sensor, low or contaminated power steering fluid, or issues with the power steering pump.
4. Can I still drive my Silverado with the C158C code?
While the truck may still be drivable, steering assistance may be limited, making it harder to control the vehicle, especially at lower speeds.
5. How do I fix the C158C code on a Chevy Silverado?
Possible fixes include checking and replenishing power steering fluid, inspecting or replacing the hydraulic pressure sensor, or repairing the power steering pump.
6. How can low power steering fluid cause the C158C code?
Low fluid levels can lead to insufficient hydraulic pressure, triggering the code and reducing steering assist functionality.
7. Is the hydraulic pressure sensor a common failure point for the C158C code?
Yes, the hydraulic pressure sensor can fail or provide incorrect readings, leading to the code being triggered.
8. How much does it cost to fix the C158C code on a 2017 Silverado?
Repair costs vary depending on the issue. Replacing a hydraulic pressure sensor may cost $150–$300, while power steering pump repairs can exceed $500.
9. Can a dirty or clogged power steering system cause the C158C code?
Yes, contamination or debris in the power steering fluid can disrupt pressure regulation and trigger the code.
10. Do I need specialized tools to diagnose the C158C code?
Yes, an advanced OBDII scanner capable of reading manufacturer-specific codes and live data is recommended for accurate diagnosis.
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