C158C 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 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 Description
What are the Possible Causes of the DTC C158C?
- 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?
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 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 code?
Need more information on how to fix the C158C code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C158C code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C158C Buick — Steering Assist Hydraulic Pressure Out of Range
- C158C Cadillac — Steering Assist Hydraulic Pressure Out of Range
- C158C Chevrolet — Steering Assist Hydraulic Pressure Out of Range
- C158C GMC — Steering Assist Hydraulic Pressure Out of Range
Frequently Asked Questions about C158C Code
1. What are common symptoms of OBDII code C158C (Steering Assist Hydraulic Pressure Out of Range)?
- Common symptoms include difficulty steering, a stiff steering wheel, or unusual noises coming from the steering system.
2. What are the possible causes of OBDII code C158C?
- The code C158C can be caused by issues with the power steering pump, low power steering fluid, a faulty pressure sensor, or a problem with the steering rack.
3. How can I diagnose the cause of OBDII code C158C?
- To diagnose the cause of the code C158C, you should perform a visual inspection of the power steering system, check the power steering fluid level, and use a diagnostic tool to read the code and related data.
4. Can driving with OBDII code C158C cause further damage to my vehicle?
- Driving with the code C158C may result in difficulty steering, potential loss of power steering assistance, and further damage to the power steering components if left unrepaired.
5. How can I repair OBDII code C158C (Steering Assist Hydraulic Pressure Out of Range)?
- Repairing the code C158C may involve checking and refilling power steering fluid, replacing a faulty power steering pump, pressure sensor, or steering rack, and clearing the trouble codes with a diagnostic tool.
6. Is it safe to continue driving my vehicle with OBDII code C158C?
- It is not recommended to drive your vehicle with the code C158C as it can affect your ability to steer safely. It is best to address the issue promptly to avoid further damage.
7. Can I reset OBDII code C158C without repairing the underlying issue?
- While you can clear the code temporarily, it is crucial to address the underlying problem causing the code C158C to prevent potential safety hazards and further damage to the steering system.
8. How much does it typically cost to repair OBDII code C158C?
- The cost to repair the code C158C can vary depending on the specific cause of the issue, but it may range from a simple power steering fluid top-up to more extensive repairs involving component replacement.
9. Are there any DIY repair tips for OBDII code C158C?
- DIY repair tips for the code C158C may include checking power steering fluid levels, visually inspecting for leaks or damage, and following manufacturer guidelines for power steering system maintenance.
10. Can extreme weather conditions affect OBDII code C158C?
- Extreme weather conditions can potentially exacerbate issues related to the power steering system, leading to symptoms associated with the code C158C. Regular maintenance and care can help prevent weather-related problems.
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