Quick Answer
P0357 means: P0357 indicates a malfunction in the ignition coil 'G' circuit, affecting engine performance.
Can I drive with P0357? Immediate attention is recommended to prevent further engine damage.
Common Questions
What does P0357 mean and how does it affect my car?
The P0357 code means there's a problem with the ignition coil 'G' circuit, which can lead to poor engine performance, misfires, and difficulty starting. If left unchecked, it may cause further engine damage or reduced fuel efficiency.
What are the most common causes of P0357 and how much does it cost to fix?
Common causes include a faulty ignition coil (60% likelihood) and damaged wiring. Repair costs typically range from $150 for a coil replacement to $1,000 for PCM issues, depending on the vehicle and extent of damage.
Can I drive my car with P0357 or should I stop immediately?
It's not advisable to drive with this code active, as it can lead to increased engine wear and potential breakdown. It's best to diagnose and repair the issue at your earliest convenience.
How can I diagnose P0357 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for codes, view freeze frame data, and run live data tests to pinpoint issues in the ignition system, helping you understand what repairs may be necessary.
What vehicles are most commonly affected by P0357?
This code is frequently seen in vehicles like the 2007-2013 Chevrolet Silverado, 2008-2010 Ford F-250, and others with similar ignition systems. Be sure to check for any recalls or Technical Service Bulletins related to ignition issues.
How can I prevent P0357 from happening again?
Regular maintenance, including ignition system checks, replacing old ignition coils, and ensuring proper wiring conditions, can help prevent future occurrences of the P0357 code.
What is P0357?
The P0357 diagnostic trouble code (DTC) indicates a malfunction in the ignition coil 'G' circuit, which is critical for proper engine performance. This error typically arises from a failure in the ignition coil or issues related to its wiring and connectors. In vehicles, the ignition coil transforms the battery's low voltage into the high voltage required to ignite the air-fuel mixture in the engine's cylinders. A malfunction in this system can lead to significant performance issues, including misfires, poor fuel economy, and difficulty starting the vehicle. Commonly found in vehicles like the 2007-2013 Chevrolet Silverado and 2008-2010 Ford F-250, a P0357 code can cause the check engine light to illuminate and may result in reduced power and efficiency. Ignoring this code may lead to more severe engine problems, so addressing it promptly is essential. If you are experiencing symptoms like engine hesitation, poor acceleration, or stalling, it's crucial to diagnose and repair the issue as soon as possible to avoid further damage.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0357 is present:
- Check engine light stays on constantly, indicating a persistent issue that needs to be addressed.
- Engine hesitates during acceleration, making it difficult to maintain speed or accelerate smoothly.
- Fuel economy decreased by 10-15%, leading to higher fuel expenses and more frequent refueling.
- Rough idling or stalling when the vehicle is at a stop, which can be frustrating and alarming for drivers.
- Poor overall engine performance, resulting in sluggish acceleration and reduced responsiveness.
Possible Causes
Most common causes of P0357 (ordered by frequency):
- Faulty ignition coil is the most common cause, with a likelihood of about 60%. Ignition coils can wear out over time due to heat and vibration.
- Damaged wiring or poor connections related to the ignition coil can lead to a loss of power or performance. This is often due to corrosion or fraying.
- A malfunctioning Powertrain Control Module (PCM) can also trigger this code, although it’s less common. Regular inspections can help catch these issues early.
- Less common but serious causes include internal engine problems, such as a failed camshaft or crankshaft sensor, which can lead to misfires and engine damage.
- Rarely, a short circuit in the ignition system can cause this code, typically resulting from aftermarket modifications or faulty repairs.
P0357 Repair Costs
Cost Breakdown by Repair Type
Ignition Coil Replacement
Replacing the faulty ignition coil with an OEM or aftermarket part.
- Total: $150 - $400
- Success rate: 90%
Wiring Repair
Repairing or replacing damaged wiring or connectors associated with the ignition coil.
- Total: $50 - $150
- Success rate: 80%
PCM Reprogramming
Reprogramming or replacing the Powertrain Control Module if identified as the fault.
- Total: $300 - $1,000
- Success rate: 70%
Money-Saving Tips for P0357
- 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 P0357 Diagnosis Process
Follow these systematic steps to accurately diagnose P0357. 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 ignition coil and associated wiring (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the ignition coil and associated wiring (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes with the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes with the GeekOBD APP (10-15 minutes).
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).
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: Chevrolet Silverado P0357 Repair
Vehicle: 2010 Chevrolet Silverado 1500, 80,000 miles
Problem: Customer complained of rough idling and a persistent check engine light.
Diagnosis: After performing a diagnostic scan, P0357 was identified. A visual inspection revealed a corroded ignition coil connector.
Solution: Replaced the ignition coil and repaired the wiring harness to ensure a solid connection.
Cost: $250 (including parts and labor)
Result: The check engine light was cleared, and the vehicle ran smoothly with improved performance.
Case Study 2: Ford F-250 Ignition System Troubleshooting
Vehicle: 2009 Ford F-250 Super Duty, 120,000 miles
Problem: Engine was misfiring and had reduced power, leading to poor acceleration.
Diagnosis: Diagnostic testing revealed P0357. Further tests confirmed a faulty ignition coil.
Solution: The faulty ignition coil was replaced, and a full inspection of the ignition wiring was performed.
Cost: $300 (including parts and labor)
Result: Post-repair road tests confirmed the issue was resolved, and the customer reported improved engine performance.