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P158A 2016 Chevrolet Silverado Code - Cruise Control Calibration Incorrect

Quick Answer

The P158A diagnostic trouble code (DTC) indicates that the cruise control system in a 2016 Chevrolet Silverado has detected a calibration issue. Common causes include Faulty throttle position sensor (TPS) or accelerator pedal position sensor (APPS), Malfunctioning cruise control module or control switch, Wiring issues, such as damaged or corroded connectors in the cruise control circuit. 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
P158A 2016 Chevrolet Silverado indicates Cruise Control Calibration Incorrect.
Common causes
Common causes include Faulty throttle position sensor (TPS) or accelerator pedal position sensor (APPS), Malfunctioning cruise control module or control switch, Wiring issues, such as damaged or corroded connectors in the cruise control circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 17, 2024
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Code P158A 2016 Chevrolet Silverado Description

The P158A diagnostic trouble code (DTC) indicates that the cruise control system in a 2016 Chevrolet Silverado has detected a calibration issue. This code is typically triggered when the vehicle's Engine Control Module (ECM) identifies that the cruise control system is not functioning within its expected parameters. The cruise control system relies on various sensors and modules to maintain a set speed, and any discrepancies in the calibration of these components can lead to erratic behavior or complete failure of the cruise control functionality.

OBDII Code P158A 2016 Chevrolet Silverado - Cruise Control Calibration Incorrect
P158A 2016 Chevrolet Silverado Code - Cruise Control Calibration Incorrect

Common Causes of P158A 2016 Chevrolet Silverado

  1. Faulty throttle position sensor (TPS) or accelerator pedal position sensor (APPS).
  2. Malfunctioning cruise control module or control switch.
  3. Wiring issues, such as damaged or corroded connectors in the cruise control circuit.
  4. Software glitches or calibration errors in the vehicle's ECM.
  5. Mechanical issues with the throttle body or cruise control actuator.

Symptoms of P158A 2016 Chevrolet Silverado

  1. Inability to engage cruise control.
  2. Cruise control disengages unexpectedly while driving.
  3. Inconsistent speed maintenance when cruise control is engaged.
  4. Dashboard warning lights related to the cruise control system illuminate.
  5. Unusual throttle response when attempting to use cruise control.

How to Fix P158A 2016 Chevrolet Silverado

  1. Diagnostic Scan: Begin by using an OBD-II scanner to confirm the P158A code and check for any additional codes that may provide further insight into the issue.
  2. Visual Inspection: Conduct a thorough visual inspection of the cruise control wiring and connectors for any signs of damage, corrosion, or loose connections.
  3. Sensor Testing: Test the throttle position sensor and accelerator pedal position sensor for proper functionality using a multimeter. Replace any faulty sensors as needed.
  4. Cruise Control Module Check: Inspect the cruise control module and control switch for proper operation. If necessary, reprogram or replace the module.
  5. Calibration: If all components are functioning correctly, perform a cruise control system calibration using a professional scan tool to ensure all parameters are set correctly.

Cost to Fix P158A 2016 Chevrolet Silverado

The typical repair costs for addressing a P158A code can vary widely based on the specific diagnosis and repairs needed. On average, you might expect to pay between $150 and $600. This estimate includes parts such as sensors or modules, which can range from $50 to $300, and labor costs that typically fall between $80 and $150 per hour. It's important to note that labor rates can differ significantly based on location, vehicle make and model, and engine type. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer more competitive pricing. Therefore, it is advisable to check local rates for a more precise estimate tailored to your specific situation.

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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 P158A 2016 Chevrolet Silverado Code

1. What does the OBDII code P158A mean on a 2016 Chevrolet Silverado?

P158A indicates that the Cruise Control Calibration is incorrect and the system has detected an issue with the cruise control functionality.

2. What are the common symptoms of code P158A in a 2016 Chevrolet Silverado?

Common symptoms include the cruise control not engaging or functioning properly, and the check engine light or other warning lights may illuminate on the dashboard.

3. What causes the P158A code on a 2016 Chevrolet Silverado?

The code is typically caused by incorrect calibration of the cruise control system, a faulty cruise control module, or issues with related sensors or wiring.

4. Can the P158A code affect driving performance on a 2016 Chevrolet Silverado?

While it usually does not affect overall driving performance, it can prevent the use of cruise control, which may be inconvenient for long-distance driving.

5. How do you diagnose the P158A code on a 2016 Chevrolet Silverado?

A technician will use a diagnostic scanner to confirm the code, inspect the cruise control module and related wiring, and check for software or calibration issues.

6. Can you fix the P158A code yourself on a 2016 Chevrolet Silverado?

If the issue is related to software calibration, it may require a dealership or qualified technician to reprogram the cruise control module. Wiring inspections and minor repairs can sometimes be done by experienced DIYers.

7. Does the P158A code require reprogramming of the cruise control system?

Yes, in many cases, resolving this code involves reprogramming or recalibrating the cruise control system using specialized dealership tools.

8. How much does it cost to fix the P158A code on a 2016 Chevrolet Silverado?

The cost can vary, but reprogramming or recalibration typically ranges from $100 to $300, depending on the dealership or repair shop.

9. Can a faulty sensor cause the P158A code on a 2016 Chevrolet Silverado?

Yes, a faulty sensor, such as a throttle position sensor or brake pedal position sensor, can contribute to this code if it disrupts cruise control operation.

10. Is it safe to drive with the P158A code on a 2016 Chevrolet Silverado?

Yes, it is generally safe to drive, but you won’t be able to use cruise control until the issue is resolved.

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