P0352: Ignition Coil B Primary/Secondary Circuit Malfunction
Can you still drive? Not recommended for extended driving. A persistent cylinder 2 misfire will cause catalytic converter damage over time.
What Does P0352 Mean?
Code P0352 indicates an electrical malfunction in the ignition coil circuit for cylinder 2 (coil B). The ECM has detected abnormal resistance, an open circuit, or a short in the coil that prevents proper spark generation for cylinder 2. This will cause a consistent misfire on that cylinder.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Failed ignition coil for cylinder 2
- Cracked or arcing coil boot
- Corroded coil connector pins
- Damaged wiring in coil circuit
- Worn spark plug causing secondary voltage spike that damages coil
Symptoms
- Check engine light on or flashing
- Engine misfire on cylinder 2
- Rough idle
- Reduced power
- Increased exhaust emissions
Diagnostic Steps
- 1Swap cylinder 2 coil with another cylinder to confirm coil failure
- 2Check coil primary and secondary winding resistance
- 3Inspect spark plug and coil boot for carbon tracking
- 4Test coil connector for proper voltage and trigger signal
- 5Check for TSBs related to coil failures on your specific vehicle
- 6Replace spark plug when replacing coil to prevent recurrence
Recommended Parts & Tools
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $30 - $250 |
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Chat with AI About P0352Commonly Affected Vehicles
Related Recalls
5 Active Recalls — 2026 Ford Explorer
The following NHTSA safety recalls have been issued for this vehicle. Contact your dealer to check if your vehicle is affected.
VISIBILITY:WINDSHIELD
Ford Motor Company (Ford) is recalling certain 2025-2026 Lincoln Corsair, Lincoln Aviator, and Explorer vehicles. The windshield glass may have visible air bubbles, which can obscure the driver's visibility. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 205, "Glazing Materials."
Remedy: Dealers will inspect and replace the windshield as necessary, free of charge. Owner notification letters were mailed November 6, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25C60. Vehicle Identification Numbers (VINs) involved in this recall become searchable on NHTSA.gov beginning October 27, 2025.
ENGINE
Ford Motor Company (Ford) is recalling certain 2026 Explorer, Mustang, Lincoln Corsair, and 2025 Maverick vehicles. The cylinder head may have been improperly manufactured, which can cause the ball plugs to fail, resulting in an oil leak.
Remedy: Dealers will replace the cylinder head assembly, free of charge. All affected vehicles are still within dealership inventory and therefore no owner notification letters will be mailed. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SD3. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on November 24, 2025.
TRAILER HITCHES
Ford Motor Company (Ford) is recalling certain 2024-2026 Explorer and 2024-2026 Lincoln Aviator vehicles. The trailer hitch assembly bolts may be loose.
Remedy: Dealers will inspect and tighten the trailer hitch bolts, or replace them as necessary, free of charge. Owner notification letters were mailed October 29, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SA3. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on October 15, 2025.
VISIBILITY:WINDSHIELD
Ford Motor Company (Ford) is recalling certain 2026 Explorer vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 212, "Windshield Mounting."
Remedy: Dealers will remove and replace the windshield, free charge. Owner notification letters were mailed January 30, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C02. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on January 22, 2026.
EXTERIOR LIGHTING:HEADLIGHTS
Ford Motor Company (Ford) is recalling certain 2025-2026 Explorer vehicles. The Dynamic Bending Light (DBL) system software may cause the passenger-side headlight to turn in the wrong direction when driving through curves in the road. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, " Lamps, Reflective Devices, and Associated Equipment."
Remedy: The headlight control module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters are expected to be mailed March 23, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C12. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on March 5, 2026.
Data provided by the National Highway Traffic Safety Administration (NHTSA).
Frequently Asked Questions
How do I swap coils to test?
Remove the coil from cylinder 2 and swap it with the coil from another cylinder (like cylinder 1). Clear the codes and run the engine. If the misfire code moves to the other cylinder, the coil is confirmed bad.
Can a bad spark plug kill a coil?
Yes, a worn spark plug with a wide gap forces the coil to produce higher voltage, which generates more heat and can burn out the coil over time. Always replace the spark plug when replacing a coil.
Community Fix Reports
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