P058C - Understanding and Resolving Cruise Control System Malfunction in Ford, GMC, and Chevrolet Vehicles

Quick Answer

P058C means: P058C indicates a malfunction in the cruise control system, affecting throttle control.

Fix: Check and replace faulty components Cost: $100 - $300 Time: 90-180 minutes

Can I drive with P058C? It is recommended to address this issue promptly to avoid safety risks.

Common Questions

What does P058C mean and how does it affect my car?

The P058C code signifies a malfunction in your cruise control system, affecting its ability to maintain speed. If left unaddressed, it can lead to safety issues and decreased fuel efficiency, making it crucial to get it diagnosed and repaired promptly.

What are the most common causes of P058C and how much does it cost to fix?

Common causes include a faulty cruise control switch and throttle position sensor, with repair costs ranging from $100 to $400 depending on the specific issue and required parts.

Can I drive my car with P058C or should I stop immediately?

While you can drive your vehicle with the P058C code, it's advisable to avoid using cruise control until it is repaired. Ignoring the issue can lead to unsafe driving conditions.

How can I diagnose P058C myself using GeekOBD APP?

Using the GeekOBD APP, connect it to your vehicle's OBD2 port and retrieve the fault codes. Pay attention to freeze frame data to understand the conditions under which the P058C was triggered, and perform a visual inspection of wiring and connectors.

What vehicles are most commonly affected by P058C?

This code is frequently found in 2015-2018 Ford F-150, 2013-2017 Chevrolet Silverado, and 2015-2019 GMC Sierra models. Check for any recalls or technical service bulletins related to cruise control issues.

How can I prevent P058C from happening again?

Regular maintenance checks, especially of the cruise control system and related wiring, can help. Additionally, avoiding harsh driving conditions and ensuring proper vehicle care can minimize the risk of triggering the P058C code.

What is P058C?

The diagnostic trouble code (DTC) P058C indicates a problem with the cruise control system, specifically related to the throttle control input. This code typically arises when the engine control module (ECM) detects an issue with the cruise control switch or the throttle position sensor. In layman's terms, this means that your vehicle is having trouble maintaining speed when cruise control is activated, which can lead to unsafe driving conditions and increased fuel consumption. If you own a vehicle from brands like Ford, GMC, or Chevrolet, it's crucial to address this error promptly as it can impact your driving experience, especially on long trips. When the P058C code is triggered, you may experience symptoms such as the cruise control not engaging at all, or if it does, it may disengage unexpectedly. Ignoring this code can lead to further complications in the throttle control system, possibly resulting in higher repair costs down the line. It’s advisable to consult a qualified technician who can run comprehensive diagnostics and recommend the appropriate repairs. Regular maintenance and timely diagnostics can help prevent such issues from escalating and ensure your vehicle remains safe and efficient on the road.

System: P - Powertrain (Engine, Transmission, Emissions)

Symptoms

Common symptoms when P058C is present:

  • Check engine light stays on constantly, indicating that the vehicle's computer has detected a persistent issue.
  • Cruise control fails to engage or disengages unexpectedly while driving, leading to potential safety hazards.
  • Throttle response becomes erratic, with noticeable hesitation during acceleration when cruise control is active.
  • Fuel economy decreases by approximately 10-15%, as the system struggles to maintain a constant speed.
  • Unusual noises from the throttle body or accelerator pedal area, signaling possible mechanical failures.

Possible Causes

Most common causes of P058C (ordered by frequency):

  1. The most common cause of the P058C code is a faulty cruise control switch, accounting for about 40% of cases. This switch can wear out over time, leading to inconsistent signals sent to the ECM.
  2. Another common cause is a malfunctioning throttle position sensor (TPS), which may provide incorrect readings to the ECM. This can affect how the cruise control system responds, leading to the code being triggered.
  3. Wiring issues, such as damaged or frayed wires connecting the cruise control system to the ECM, can lead to intermittent faults. Regular inspections can help prevent these issues.
  4. Less common but serious causes include ECM failure or software issues within the control module. This requires specialized diagnostics and potentially costly repairs.
  5. A rare cause might be a vacuum leak affecting throttle performance, which can lead to erratic cruise control behavior.

P058C Repair Costs

Cost Breakdown by Repair Type

Cruise Control Switch Replacement

Replacing the faulty cruise control switch can restore functionality.

  • Total: $100 - $300
  • Success rate: 85%
Throttle Position Sensor Replacement

If the TPS is faulty, replacing it can resolve the P058C code.

  • Total: $150 - $400
  • Success rate: 90%
Money-Saving Tips for P058C
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional P058C Diagnosis Process

Follow these systematic steps to accurately diagnose P058C. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion, which can take around 5-10 minutes

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion, which can take around 5-10 minutes.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Use the GeekOBD APP to retrieve all codes and freeze frame data, giving you context on the fault, which should take about 10-15 minutes

Step 2: OBD2 scan with GeekOBD APP - Use the GeekOBD APP to retrieve all codes and freeze frame data, giving you context on the fault, which should take about 10-15 minutes.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to test the cruise control switch and throttle position sensor for proper operation

Step 3: Component testing - Use a multimeter to test the cruise control switch and throttle position sensor for proper operation. Expect this to take 20-30 minutes.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After any repairs, verify the proper operation of the cruise control system and clear the codes using the GeekOBD APP, taking around 10-15 minutes

Step 4: System function test - After any repairs, verify the proper operation of the cruise control system and clear the codes using the GeekOBD APP, taking around 10-15 minutes.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repair success, which may take 15-20 minutes

Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repair success, which may take 15-20 minutes.

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Cruise Control Failure in 2016 Ford F-150

Vehicle: 2016 Ford F-150, 45,000 miles

Problem: Customer reported that cruise control would not engage at all.

Diagnosis: After scanning with the GeekOBD APP, the P058C code was identified. Visual inspection revealed a damaged cruise control switch.

Solution: Replaced the cruise control switch and cleared the DTC. Re-test showed normal operation.

Cost: $150 (parts and labor included)

Result: Cruise control operated correctly after the repair, and the customer was satisfied.

Case Study 2: Throttle Position Sensor Issue in 2017 Chevrolet Silverado

Vehicle: 2017 Chevrolet Silverado, 30,000 miles

Problem: Customer noted erratic acceleration and cruise control issues.

Diagnosis: The P058C code pointed to a faulty throttle position sensor after testing with a multimeter.

Solution: Replaced the throttle position sensor and recalibrated the system.

Cost: $250 (parts and labor included)

Result: The vehicle returned to normal operation with improved throttle response.

Diagnose P058C

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: P058C
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes