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IgnitionCritical⚠️ Professional Recommended

P0357

Ignition Coil G Primary/Secondary Circuit

Fault in ignition coil G (cylinder 7 on V8 engines).

SeverityCritical
CategoryIgnition
Est. Repair Cost$75–$250
Code TypePowertrain
DIY RepairProfessional

⚡ Common Causes

  • ›Failed coil G
  • ›Wiring fault

⚠️ Symptoms

  • ›Cylinder 7 misfire
  • ›Rough running
  • ›Check engine light

✅ How to Fix — Step by Step

  • Step 1:Swap coil
  • Step 2:Replace coil G
  • Step 3:Inspect wiring

🔧 Diagnostic Tools Required

Using the correct diagnostic tools helps identify the root cause of P0357 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: V8 cylinder 7 coil is often in a difficult location — on trucks it may require intake manifold removal for access.

Repair Cost Estimate

Full Repair Estimate
$75–$250
DIY Possible?
PRO
Severity
Critical

Frequently Asked Questions

What does OBD2 code P0357 mean?+
P0357 stands for Ignition Coil G Primary/Secondary Circuit. Fault in ignition coil G (cylinder 7 on V8 engines).
What causes code P0357?+
Failed coil G; Wiring fault
How do I fix code P0357?+
Swap coil; Replace coil G; Inspect wiring
How much does it cost to fix P0357?+
Estimated repair cost for P0357 is $75–$250.
Is P0357 DIY-friendly?+
P0357 typically requires professional equipment and a qualified mechanic.

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