Is it safe to drive with a P0301 code?

Severity is high. Address P0301 sooner rather than later — driving with an active check engine light can worsen the problem or void emissions warranties.

How much does it cost to fix P0301?

Repair costs for P0301 typically range from $40 to $800 in the US, depending on the underlying cause. The most common fix is: Failed ignition coil on cylinder 1.

What are the symptoms of P0301?

Check engine light (often flashing). Rough idle. Loss of power. Vibration at idle.

Check Engine Code

P0301

Cylinder 1 Misfire Detected

Severity: high DIY difficulty: 2/5 Typical cost: $40–$800

What P0301 means

P0301 identifies cylinder #1 specifically. Pair it with P0300 or other cylinder-specific codes to see the full misfire pattern.

Symptoms

Check engine light (often flashing)
Rough idle
Loss of power
Vibration at idle

Likely causes (most common first)

Failed ignition coil on cylinder 1
Worn or fouled spark plug on cylinder 1
Clogged or dead fuel injector on cylinder 1
Low compression on cylinder 1 (bent valve, worn rings)
Wiring fault to the coil or injector

Can I keep driving?

High — risk of damage if ignored

Typical repair cost

DIY fixes can start near $40 (parts only). Shop repairs for P0301 typically run up to $800 depending on the underlying cause and vehicle. Start with the most common cause — Failed ignition coil on cylinder 1 — before throwing parts at it.

Related codes

P0300 P0302 P0303 P0304

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