p0351
Easy Fix
Toyota · Sedans
Ignition Coil A Primary/Secondary Circuit Malfunction
Quick Answer
Error code P0351 on your Toyota Sedans means: Ignition Coil A Primary/Secondary Circuit Malfunction. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Avalon XLE 2022Camry XSE 2024Camry Hybrid SE 2024Corolla SE 2024Corolla Hybrid LE 2024Crown Platinum 2024Mirai Limited 2024Prius XLE 2024Camry LE 2023Camry LE 2024Camry SE 2023Camry SE 2024Camry TRD 2024Camry XLE 2024Corolla LE 2023Corolla LE 2024Corolla XSE 2024Crown Limited 2024Crown XLE 2024Prius LE 2024Prius Limited 2024
Likely Causes
How to Fix It
1
Swap the ignition coil from cylinder 1 with another cylinder and clear codes to determine if the fault follows the coil
2
Inspect the coil connector and pins for corrosion, bent pins, or burn marks
3
Measure the ignition coil primary and secondary resistance with a multimeter
4
Check the coil driver circuit wiring from the ECM for continuity and shorts
5
Replace the ignition coil if confirmed faulty
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Ignition coil
Spark plug (inspect and replace if fouled)
Coil boot or seal
Dielectric grease
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