Lexus Acura Error Code P1300: How to Fix It
Medium 1-2 hours High Severity
Verified June 2026
- Error Code
- P1300
- Brand
- Lexus Acura
- Product Type
- automotive
- Severity
- High
- DIY Difficulty
- Medium
- Estimated Fix Time
- 1-2 hours
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Tools You'll Need
- OBD2 scanner
- Socket set
- Spark plug socket
- Multimeter
- Dielectric grease
- Basic hand tools
How to Fix Error Code P1300
-
Safety Preparation
Always disconnect battery before working on ignition components to prevent electrical shock or damage to ECM. -
Scan for Additional Codes
-
Locate Cylinder 1 Ignition Coil
-
Inspect Wiring Harness
-
Test Ignition Coil Connector
Keep hands clear of moving engine parts while cranking. -
Remove and Inspect Ignition Coil
-
Test Ignition Coil Resistance
-
Inspect Spark Plug
-
Check Spark Plug Well
-
Replace Faulty Components
Torque spark plug to manufacturer specification to prevent thread damage. -
Clear Codes and Test
Parts You May Need
Ignition coil pack
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Spark plug
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Dielectric grease
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Valve cover gasket set
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Ignition coil pack
Check Price on Amazon
Spark plug
Check Price on Amazon
Dielectric grease
Check Price on Amazon
Valve cover gasket set
Check Price on Amazon
Ignition coil pack
Check Price on Amazon
Spark plug
Check Price on Amazon
Dielectric grease
Check Price on Amazon
Valve cover gasket set
Check Price on Amazon
Ignition coil pack
Check Price on Amazon
Spark plug
Check Price on Amazon
Dielectric grease
Check Price on Amazon
Valve cover gasket set
Check Price on Amazon
Ignition coil pack
Check Price on Amazon
Spark plug
Check Price on Amazon
Dielectric grease
Check Price on Amazon
Valve cover gasket set
Check Price on Amazon
Ignition coil pack
Check Price on Amazon
Spark plug
Check Price on Amazon
Dielectric grease
Check Price on Amazon
Valve cover gasket set
Check Price on Amazon
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When to Call a Professional
Call a professional mechanic if you find oil in spark plug wells (requires gasket replacement), if ECM testing is needed, if multiple cylinders are affected, or if the problem persists after replacing ignition components. Complex electrical diagnosis may require dealer-level diagnostic equipment.Frequently Asked Questions
What causes Lexus Acura P1300 error code?
P1300 is typically caused by a failed ignition coil, damaged spark plug, corroded wiring connections, or faulty ECM. Oil contamination in spark plug wells can also damage ignition components and trigger this code.
Can I drive with P1300 code?
You should not drive with P1300 code as it indicates cylinder 1 is not firing properly. This can cause engine damage from unburned fuel entering the exhaust system and damaging the catalytic converter.
How much does it cost to fix P1300 error?
Repair costs range from $50-150 for spark plug replacement, $150-300 for ignition coil replacement, or $500-1000+ if valve cover gaskets need replacement due to oil contamination.
Is P1300 the same on all Lexus and Acura models?
While P1300 generally indicates igniter circuit problems, the specific meaning can vary slightly between Lexus and Acura models. Always consult your vehicle's service manual for exact diagnostic procedures.
How do I prevent P1300 error code?
Regular maintenance including scheduled spark plug replacement, using quality fuel, fixing oil leaks promptly, and replacing worn valve cover gaskets can prevent ignition system problems that cause P1300.