How much does it cost to fix P0353?

DIY repair typically costs $25–$80 for parts. Professional repair runs $100–$300 including parts and labor.

P0353

Powertrain

Moderate

Ignition Coil C Primary/Secondary Circuit Malfunction

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The P0353 code means the PCM has detected a problem in the primary or secondary circuit of Ignition Coil C, which is responsible for firing cylinder 3. This is a circuit-level code, meaning the PCM has identified an electrical fault rather than just a misfire event.

When this code appears with a flashing Check Engine light, misfires are actively happening and raw fuel is being dumped into the exhaust. This can quickly overheat the catalytic converter, so reduce speed and avoid hard acceleration until the repair is made. A steady Check Engine light indicates the fault has been detected but may be intermittent.

The coil swap test is the fastest way to diagnose this issue: move the coil from cylinder 3 to a different cylinder and clear the codes. If the code follows the coil, replace it. If it stays on cylinder 3, the problem is in the wiring or PCM. On most engines, cylinder 3 coils are easily accessible, making this one of the simplest and most satisfying DIY repairs. Budget about $25-$80 for a new coil and consider replacing all coils and plugs at the same time if the vehicle has over 80,000 miles, since they tend to fail in sequence.

Severity

Moderate — Address SoonThis Week

Symptoms

•Engine misfires or runs rough
•Check Engine light is on (may flash)
•Noticeable vibration at idle
•Loss of power when accelerating
•Fuel smell from the exhaust
•Reduced fuel economy

Likely Causes

Faulty ignition coil (Cylinder 3)45%

The ignition coil for cylinder 3 has failed due to internal winding failure, heat damage, or insulation breakdown, and cannot produce adequate spark.

Damaged wiring or connector25%

The wiring or connector to the cylinder 3 coil is damaged, melted, corroded, or has a loose pin connection, interrupting the circuit.

Worn or fouled spark plug15%

A worn spark plug on cylinder 3 with excessive gap or carbon fouling creates abnormal resistance in the secondary circuit, stressing and eventually damaging the coil.

PCM driver circuit fault10%

The PCM's internal driver transistor for the cylinder 3 coil has failed, preventing it from properly switching the coil on and off.

Poor ground or power supply5%

A faulty ground, blown fuse, or damaged power supply wire to the coil pack is preventing proper operation of the cylinder 3 coil.