Quick Answer
P058A means: P058A indicates a malfunction in the cruise control system's performance.
Can I drive with P058A? Immediate attention is recommended to ensure safe driving.
Common Questions
What does P058A mean and how does it affect my car?
The P058A code signifies a malfunction in the cruise control system. This can lead to the system not maintaining speed or even accelerating unexpectedly, which can be dangerous, particularly on highways.
What are the most common causes of P058A and how much does it cost to fix?
Common causes include a faulty cruise control switch, wiring issues, and throttle position sensor malfunctions. Repair costs typically range from $50 to $300 depending on the specific issue and parts needed.
Can I drive my car with P058A or should I stop immediately?
While you can technically drive the car, it is not advisable to use cruise control. Addressing the issue promptly is essential for safe driving.
How can I diagnose P058A myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for trouble codes, view freeze frame data for context, and even check the performance of the cruise control components.
What vehicles are most commonly affected by P058A?
The P058A code often appears in models like the Ford F-150 (2015-2018), Ford Explorer, and other similar vehicles from Ford during that time.
How can I prevent P058A from happening again?
Regular maintenance checks, ensuring proper connections, and keeping the cruise control system clean can help prevent future issues.
What is P058A?
The OBD-II code P058A indicates a problem with the cruise control system, specifically relating to its performance. This code typically arises when the vehicle's Engine Control Module (ECM) detects that the cruise control system isn't functioning as intended. The components involved in this system include the cruise control switch, throttle position sensor, and the wiring harness connecting these parts. If the system is not working correctly, it can lead to erratic vehicle speed while using cruise control, making it a safety concern. Drivers may notice that their vehicle either won't maintain speed or may accelerate unexpectedly. The P058A code can also trigger the check engine light, alerting drivers to a potential issue. It's crucial to address this code promptly since improper cruise control operation can create dangerous driving conditions, especially on highways. Regular maintenance checks and being aware of the symptoms can help mitigate risks associated with this code. Additionally, understanding that this code often appears in popular models like the Ford F-150, Ford Explorer, and similar vehicles from the same era can aid in identifying potential issues early on.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P058A is present:
- Check engine light illuminates, indicating a potential issue with the cruise control system that requires attention.
- Cruise control fails to maintain set speed, causing fluctuations that can be alarming during highway driving.
- Unexpected acceleration while cruise control is engaged, which can lead to dangerous driving conditions.
- Difficulty in activating the cruise control system, where the controls may appear unresponsive or erratic.
- Increased fuel consumption, as the system may not optimize speed effectively, leading to lower fuel efficiency.
Possible Causes
Most common causes of P058A (ordered by frequency):
- Faulty cruise control switch (40% likelihood) - This is the most common issue, where the switch fails to send the correct signals to the ECM.
- Wiring issues (30% likelihood) - Damaged or corroded wiring can cause intermittent connectivity, resulting in performance issues.
- Throttle position sensor malfunction (20% likelihood) - If the throttle position sensor is not accurately reporting, it can interfere with cruise control operation.
- ECM software glitches (5% likelihood) - Occasionally, software updates or glitches may cause the cruise control system to misbehave.
- Less common cause - Vacuum leaks (rare) in the cruise control system can affect its performance, but this is not frequently seen.
P058A Repair Costs
Cost Breakdown by Repair Type
Cruise Control Switch Replacement
Replacing the faulty cruise control switch to restore proper signal transmission.
- Total: $100 - $250
- Success rate: 85%
Throttle Position Sensor Replacement
Replacing the throttle position sensor if it's not functioning correctly.
- Total: $150 - $300
- Success rate: 90%
Wiring Repair
Repairing any damaged wiring or connections in the cruise control circuit.
- Total: $50 - $150
- Success rate: 75%
Money-Saving Tips for P058A
- 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 P058A Diagnosis Process
Follow these systematic steps to accurately diagnose P058A. 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 (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the cruise control switch and throttle position sensor (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the cruise control switch and throttle position sensor (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the cruise control system operates correctly (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the cruise control system operates correctly (15-20 minutes).
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 Switch Replacement in 2017 Ford F-150
Vehicle: 2017 Ford F-150, 45,000 miles
Problem: Customer reported that the cruise control would not maintain speed and the check engine light was on.
Diagnosis: Diagnostic testing revealed a P058A code, indicating a malfunction in the cruise control system.
Solution: Replaced the faulty cruise control switch.
Cost: $150 (includes labor and parts)
Result: Cruise control functioned properly after repairs, and the check engine light turned off.
Case Study 2: Throttle Position Sensor Issue in 2016 Ford Explorer
Vehicle: 2016 Ford Explorer, 60,000 miles
Problem: Customer experienced sudden acceleration when cruise control was engaged.
Diagnosis: Diagnostic scan revealed a P058A code, indicating an issue with the throttle position sensor.
Solution: Replaced the throttle position sensor and recalibrated the system.
Cost: $250 (parts and labor included)
Result: The vehicle's cruise control operated correctly post-repair, with no further issues reported.