p0352
Easy Fix
Toyota · SUVs
Ignition Coil B Primary/Secondary Circuit Malfunction
Quick Answer
Error code P0352 on your Toyota SUVs means: Ignition Coil B Primary/Secondary Circuit Malfunction. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
4Runner TRD Pro 2024Grand Highlander Limited 2024Highlander XLE 2024Highlander Hybrid Bronze Edition 2023Land Cruiser 1958 Edition 2024RAV4 XLE Premium 2024RAV4 Hybrid SE 2024Sequoia Capstone 20244Runner Limited 20244Runner SR5 20244Runner TRD Off-Road 2024Grand Highlander Platinum 2024Grand Highlander XLE 2024Highlander LE 2024Highlander Limited 2024Highlander Platinum 2024RAV4 Adventure 2024RAV4 LE 2024RAV4 TRD Off-Road 2024RAV4 XLE 2024Sequoia Limited 2024Sequoia Platinum 2024Sequoia SR5 2024Sequoia TRD Pro 2024Venza Limited 2024
Likely Causes
How to Fix It
1
Swap the coil from cylinder 2 with another cylinder and clear codes to test if the fault follows the coil
2
Inspect the coil connector pins for corrosion, burn marks, or bent contacts
3
Measure the ignition coil primary and secondary winding resistance with a multimeter
4
Check the wiring from the ECM to the coil B connector for continuity and shorts to ground
5
Replace the ignition coil if confirmed defective
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 worn)
Coil boot or seal
Dielectric grease
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