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Code P1357

Quick reference

P1357 at a glance

Plain-language meaning
This means that the car's computer has detected a problem with cylinder number 8 in the engine. It's not working right, and the computer has stopped sending fuel to it to prevent damage.
Urgency
High – Misfires can lead to severe engine damage if not addressed promptly.
Difficulty
Moderate
System
Engine Performance
Tools mentioned
OBD-II scanner, Spark plug wrench, Compression tester

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This means that the car's computer has detected a problem with cylinder number 8 in the engine. It's not working right, and the computer has stopped sending fuel to it to prevent damage.

Explanation

The engine control module (ECM) has detected a misfire in cylinder 8 and has cut off fuel to that cylinder to prevent further damage.

Technical description

A misfire in cylinder 8 has been detected by the ECM due to irregular combustion. To prevent potential damage to the catalytic converter and ensure safe operation, the ECM has activated a fuel cut-off to cylinder 8.

Symptoms

• Rough engine idle

• Engine hesitation or stumbling

• Reduced engine power

• Check Engine Light illuminated

• Increased fuel consumption

Common Causes

• Faulty spark plug in cylinder 8

• Defective ignition coil for cylinder 8

• Fuel injector issue in cylinder 8

• Vacuum leak affecting cylinder 8

• Compression problems in cylinder 8

Glossary

ECM: Engine Control Module

Misfire: Failure of the air/fuel mixture in a cylinder to ignite properly

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the spark plug and ignition coil for cylinder 8.

• Check the fuel injector for cylinder 8.

• Perform a compression test on cylinder 8.

• Inspect for vacuum leaks around cylinder 8.

Repair procedures

• Replace the spark plug for cylinder 8.

• Replace or repair the ignition coil for cylinder 8.

• Clean or replace the fuel injector for cylinder 8.

• Repair any vacuum leaks found.

• Address any compression issues with engine repair.

Tools required

• OBD-II scanner

• Spark plug wrench

• Compression tester

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• Ford F-150

• Dodge Ram 1500

Preventive measures

• Regularly replace spark plugs and ignition components.

• Use high-quality fuel.

• Perform regular engine maintenance checks.

Error code type

Engine Performance

User experience recommendations

• Avoid driving the vehicle until repaired to prevent further damage.

• Consult a professional mechanic for diagnosis and repair.

Warranty information

Check with your vehicle manufacturer for warranty coverage on engine components.

Historical data

Misfire codes like P1357 have been common in vehicles with high mileage or poor maintenance history.

Urgency level

High – Misfires can lead to severe engine damage if not addressed promptly.

Testing conditions

• Engine at operating temperature

• Under load conditions

Component location

Cylinder 8 is typically located at the rear of the engine on the driver's side in a V8 engine configuration.

FAQs

Q: Can I drive with a P1357 code?
A: It's not recommended to drive with a misfire code as it can lead to further engine damage.

Q: What happens if I ignore a P1357 code?
A: Ignoring the code can result in severe engine damage and increased repair costs.

Optional diagnostic gear

Tools that may help diagnose P1357

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Fitment matters

Commonly referenced parts for P1357

Walker Catalytic Converter product illustration

Fitment Required · Vehicle-fitment part

Walker Catalytic Converter

Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.

Catalyst-efficiency faults sometimes point toward converter problems after proper testing.

Catalytic converters are highly vehicle-specific and should not be purchased by code alone.

View options on Amazon
NGK Spark Plugs product illustration

Fitment Required · Vehicle-fitment part

NGK Spark Plugs

Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.

Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.

Check the correct plug type, gap, and engine application for your vehicle.

View options on Amazon
Delphi Ignition Coil product illustration

Fitment Required · Vehicle-fitment part

Delphi Ignition Coil

Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.

Some ignition faults involve coil performance or cylinder-specific coil problems.

Match the coil to your engine and confirm the failed component before ordering.

View options on Amazon

These parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.

Source: ezOBD2 diagnostic database
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