Engine-CodesScion – P0351 Scion

P0351 Scion Code - Ignition Coil 1 Primary/Secondary Circuit

Quick Answer

The P0351 code for a Scion indicates a problem with the ignition coil 1 primary/secondary circuit. Common causes include Faulty ignition coil, Damaged spark plug wires, Malfunctioning powertrain control module (PCM). 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
P0351 Scion indicates Ignition Coil 1 Primary/Secondary Circuit.
Common causes
Common causes include Faulty ignition coil, Damaged spark plug wires, Malfunctioning powertrain control module (PCM).
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0351 Scion Description

The P0351 code for a Scion indicates a problem with the ignition coil 1 primary/secondary circuit. The ignition coil is a crucial component in the vehicle's ignition system responsible for converting the low voltage from the battery into the high voltage needed to spark the spark plugs. In this case, the code specifically points to an issue with the primary or secondary circuit of the ignition coil for cylinder 1.

OBDII Code P0351 Scion - Ignition Coil 1 Primary/Secondary Circuit
P0351 Scion Code - Ignition Coil 1 Primary/Secondary Circuit

Common Causes of P0351 Scion

  1. Faulty ignition coil
  2. Damaged spark plug wires
  3. Malfunctioning powertrain control module (PCM)
  4. Wiring issues in the ignition coil circuit
  5. Corrosion or carbon tracking on the ignition coil

Symptoms of P0351 Scion

  1. Engine misfires
  2. Rough idling
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Illuminated check engine light

How to Fix P0351 Scion

  1. Diagnose the issue: Use a scan tool to confirm the P0351 code, check the ignition coil for any visible damage, and inspect the wiring for any issues.
  2. Replace the ignition coil: If the ignition coil is determined to be faulty, replace it with a new one that is compatible with your Scion model.
  3. Check spark plug wires: Inspect the spark plug wires for any damage or wear and replace them if necessary.
  4. Clear the code: After completing the repair, clear the diagnostic trouble codes from the vehicle's memory using a scan tool.
  5. Test drive the vehicle: Take the vehicle for a test drive to ensure that the issue has been resolved and that the engine is running smoothly.

Cost to Fix P0351 Scion

The typical repair costs for addressing the P0351 code on a Scion can range from $150 to $300. This estimate includes the cost of a new ignition coil, potential spark plug wire replacement, and labor costs. However, the specific diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable rates.

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Information for Specific Scion Models

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.

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