P0658 - Understanding DTC P0658: Common in 2015-2018 Ford Focus and Chevrolet Malibu

Quick Answer

P0658 means: P0658 indicates a problem with the throttle actuator control circuit.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with P0658? Address this issue immediately to avoid performance and safety risks.

Common Questions

What does P0658 mean and how does it affect my car?

P0658 indicates a malfunction in the throttle actuator control circuit, which can lead to poor acceleration, rough idling, and stalling. If not addressed, it can affect overall vehicle performance and safety.

What are the most common causes of P0658 and how much does it cost to fix?

Common causes include a faulty throttle position sensor, damaged wiring, or a malfunctioning ECM, with repair costs ranging from $100 to $1,200 depending on the issue.

Can I drive my car with P0658 or should I stop immediately?

It's advisable to stop driving if you encounter this code, as it can lead to stalling and unsafe driving conditions. Address it as soon as possible.

How can I diagnose P0658 myself using GeekOBD APP?

You can use the GeekOBD APP to scan for codes, view freeze frame data, and monitor real-time sensor readings to identify the throttle position sensor's performance.

What vehicles are most commonly affected by P0658?

Commonly affected vehicles include the 2015-2018 Ford Focus, Chevrolet Malibu, and various models from Honda and Toyota. Always check for any recalls related to these vehicles.

How can I prevent P0658 from happening again?

Regular maintenance, including checking electrical connections and keeping the throttle body clean, can help prevent issues that lead to P0658. Consider using quality parts if replacements are needed.

What is P0658?

DTC P0658 refers to a problem with the vehicle's throttle actuator control circuit. Essentially, the Engine Control Module (ECM) has detected an issue with the signal received from the throttle actuator. This code usually indicates that the ECM is unable to properly control the throttle position, which can lead to poor engine performance, reduced fuel efficiency, and potential safety concerns while driving. When you see this code, it can stem from various factors like a faulty throttle position sensor, damaged wiring, or even a malfunctioning ECM. The real-world implications of this code can be significant; for example, you might experience rough idling, a decrease in acceleration response, or even stalling. It's crucial to address this code promptly to avoid further engine issues and ensure optimal vehicle performance. Ignoring this code can lead to more serious damage and costly repairs down the line, especially if the problem is related to the ECM or wiring harness. In summary, P0658 is a code that signals a malfunction in the throttle actuator control circuit, requiring thorough diagnostics and likely repairs to restore your vehicle's performance.

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

Symptoms

Common symptoms when P0658 is present:

  • The check engine light stays on constantly, indicating a persistent problem that needs attention.
  • You may notice engine hesitation during acceleration, making it difficult to pick up speed smoothly.
  • Fuel economy could decrease significantly, potentially dropping by 10-15%, affecting your wallet at the pump.
  • Rough idling may occur, causing vibrations and an uncomfortable driving experience.
  • In some cases, the vehicle might stall unexpectedly, which can be dangerous while driving.

Possible Causes

Most common causes of P0658 (ordered by frequency):

  1. The most common cause is a faulty throttle position sensor, which accounts for about 40% of cases. This part is responsible for sending the throttle position data to the ECM.
  2. Another frequent cause is damaged wiring or poor electrical connections, which can disrupt the signal between the throttle actuator and the ECM.
  3. A malfunctioning ECM itself can also trigger the P0658 code. While rare, this can happen due to software issues or internal circuit failures.
  4. Less common but serious causes include a malfunctioning throttle body assembly, requiring immediate attention to prevent further issues.
  5. In rare cases, aftermarket modifications to the engine or electrical system can lead to conflicts and trigger this code.

P0658 Repair Costs

Cost Breakdown by Repair Type

Throttle Position Sensor Replacement

Replacing the faulty throttle position sensor is often necessary.

  • Total: $150 - $300
  • Success rate: 85%
Wiring Repair or Replacement

Fixing damaged wiring or connectors to restore signal integrity.

  • Total: $100 - $200
  • Success rate: 90%
ECM Reprogramming or Replacement

In rare cases, the ECM may need to be reprogrammed or replaced.

  • Total: $500 - $1,200
  • Success rate: 75%
Money-Saving Tips for P0658
  • 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 P0658 Diagnosis Process

Follow these systematic steps to accurately diagnose P0658. 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).

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 - 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).

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 or specific diagnostic tools to test suspected components, including the throttle position sensor (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, including the throttle position sensor (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 - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (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 repair success (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (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: Throttle Position Sensor Replacement on 2016 Ford Focus

Vehicle: 2016 Ford Focus, 50,000 miles

Problem: Customer reported check engine light and rough acceleration.

Diagnosis: Scanned OBDII codes and identified P0658, indicating a throttle position sensor issue.

Solution: Replaced the throttle position sensor and cleared the codes.

Cost: $220 (sensor cost $150, labor $70)

Result: Customer reported smooth acceleration and no further issues.

Case Study 2: Wiring Repair on 2017 Chevrolet Malibu

Vehicle: 2017 Chevrolet Malibu, 30,000 miles

Problem: Vehicle hesitated during acceleration and check engine light illuminated.

Diagnosis: Found damaged wiring to the throttle actuator.

Solution: Repaired the wiring harness and tested the throttle system.

Cost: $150 (repair cost only)

Result: Vehicle performed normally post-repair with no further codes.

Diagnose P0658

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: P0658
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes