AutoCodes – Generic – P1301

P1301 Code - Cylinder 1 Misfiring Detected

Quick Answer

P1301 indicates Cylinder 1 Misfiring Detected. Common causes include Faulty Spark Plug #1, Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1301 indicates Cylinder 1 Misfiring Detected.
Common causes: Common causes include Faulty Spark Plug #1, Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 36,990

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P1301 Description

OBDII Code P1301 - Cylinder 1 Misfiring Detected - AutoCodes.com — P1301 Code - Cylinder 1 Misfiring Detected

What does this mean?

What are the Possible Causes of the DTC P1301?

Faulty Spark Plug #1
Faulty Ignition Coil 1
Ignition Coil 1 harness is open or shorted
Ignition Coil 1 circuit poor electrical connection

How to Fix the DTC P1301?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Ignition monitoring cylinder spark duration too short

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1301 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1301 code?

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Need Help with the Code?

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Information for Specific Makes

P1301 Acura — Cylinder Number 1 Random Misfire Detected
P1301 BMW — Misfiring Cylinder 1
P1301 Ford — Boost Pressure Pressure High
P1301 Honda — Cylinder Number 1 Random Misfire Detected
P1301 Hyundai — TDC Sensor Abnormal
P1301 MINI — Misfiring Cylinder 1
P1301 Saab — Cylinder 1 Misfiring Detected
P1301 Subaru — Misfire Detected Increased Exhaust Temperature

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.