Engine-CodesJeep – P1159 Jeep

P1159 Jeep Code - Improper Start Attempt

Quick Answer

The P1159 Jeep diagnostic trouble code indicates an improper start attempt. Common causes include Faulty ignition coils, Malfunctioning fuel pump, Clogged fuel filter. 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
P1159 Jeep indicates Improper Start Attempt.
Common causes
Common causes include Faulty ignition coils, Malfunctioning fuel pump, Clogged fuel filter.
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 10, 2024
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Code P1159 Jeep Description

The P1159 Jeep diagnostic trouble code indicates an improper start attempt. This means that the vehicle's engine has failed to start properly, which can lead to issues with the vehicle's performance and drivability. When this code is triggered, it typically points to a problem with the starting system, such as the ignition system, fuel system, or engine sensors. If not addressed promptly, this issue can lead to further complications, such as stalling, rough idling, and decreased fuel efficiency.

OBDII Code P1159 Jeep - Improper Start Attempt
P1159 Jeep Code - Improper Start Attempt

Common Causes of P1159 Jeep

  1. Faulty ignition coils
  2. Malfunctioning fuel pump
  3. Clogged fuel filter
  4. Engine sensor issues
  5. Bad starter motor

Symptoms of P1159 Jeep

  1. Difficulty starting the engine
  2. Engine cranks for an extended period before starting
  3. Rough idling or misfires
  4. Decreased fuel efficiency

How to Fix P1159 Jeep

  1. Diagnose the issue by using a scan tool to retrieve the specific trouble codes and perform a visual inspection of the starting system components.
  2. Test the ignition coils, fuel pump, fuel filter, and engine sensors to identify any faulty components.
  3. Replace any faulty components identified during testing, such as ignition coils, fuel pump, fuel filter, or engine sensors.
  4. Clear the trouble codes from the vehicle's computer system and test the vehicle to ensure the issue has been resolved.

Cost to Fix P1159 Jeep

The typical repair costs for addressing a P1159 Jeep code can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of replacing faulty ignition coils can range from $100 to $300 per coil, while a new fuel pump can cost between $200 to $600. Additionally, the cost of replacing a fuel filter or engine sensors can range from $50 to $200 per component. Labor costs can vary, but most auto repair shops charge between $80 and $150 per hour for diagnostic and repair work. It's advisable to check with local repair shops for a more accurate cost estimate based on your specific vehicle make and model.

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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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