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Engine-Codes – Isuzu – P1250 Isuzu

P1250 Isuzu Code - Fuel Pump Relay Control Circuit Shorted To Ground

Quick Answer

The P1250 Isuzu code indicates that the fuel pump relay control circuit is shorted to ground. Common causes include Faulty fuel pump relay, Damaged wiring in the control circuit, Short in the circuit. 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
P1250 Isuzu indicates Fuel Pump Relay Control Circuit Shorted To Ground.
Common causes
Common causes include Faulty fuel pump relay, Damaged wiring in the control circuit, Short in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1250 Isuzu Description

The P1250 Isuzu code indicates that the fuel pump relay control circuit is shorted to ground. This means that there is an electrical issue in the circuit that controls the fuel pump relay, causing it to be grounded when it should not be. The fuel pump relay is responsible for controlling the flow of electricity to the fuel pump, which in turn ensures that the engine receives the proper amount of fuel for combustion.

OBDII Code P1250 Isuzu - Fuel Pump Relay Control Circuit Shorted To Ground
P1250 Isuzu Code - Fuel Pump Relay Control Circuit Shorted To Ground

Common Causes of P1250 Isuzu

  1. Faulty fuel pump relay
  2. Damaged wiring in the control circuit
  3. Short in the circuit
  4. Corrosion or poor connections in the circuit
  5. Electrical issues in the vehicle's wiring system

Symptoms of P1250 Isuzu

  1. Engine misfires or runs rough
  2. Stalling or difficulty starting
  3. Check engine light illuminated
  4. Reduced fuel efficiency
  5. Engine hesitation or lack of power

How to Fix P1250 Isuzu

  1. Diagnose the specific cause of the short to ground using a multimeter to test the circuit for continuity and voltage.
  2. Inspect the fuel pump relay for any signs of damage or malfunction and replace if necessary.
  3. Check the wiring in the control circuit for any damage or corrosion, repairing or replacing as needed.
  4. Clear the trouble codes from the vehicle's computer using a scan tool and test the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consult a professional technician for further diagnostics and repair.

Cost to Fix P1250 Isuzu

The typical repair costs for a P1250 Isuzu code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of replacing a fuel pump relay can range from $50 to $150, including parts and labor. Additional costs may be incurred for diagnostic testing, wiring repairs, or other necessary components. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. It's advisable to contact local shops for a more accurate estimate based on your specific vehicle and location.

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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.

Frequently Asked Questions about P1250 Isuzu Code

1. What are the common symptoms of OBDII code P1250 in an Isuzu related to the fuel pump relay control circuit being shorted to ground?

The common symptoms include the fuel pump not running, engine stalling or difficulty starting, and a check engine light illuminated on the dashboard.

2. What can cause the fuel pump relay control circuit to be shorted to ground in an Isuzu, triggering OBDII code P1250?

Potential causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, or a short circuit in the fuel pump relay control circuit.

3. How can I diagnose the issue causing OBDII code P1250 in my Isuzu?

You can diagnose the issue by checking the fuel pump relay, inspecting the wiring and connectors for damage, testing for continuity in the circuit, and using a scan tool to monitor the fuel pump relay control status.

4. Is it safe to continue driving my Isuzu with OBDII code P1250 present?

It is not recommended to drive your Isuzu with OBDII code P1250, as it can lead to fuel delivery problems and potential engine stalling, which may compromise safety and further damage the vehicle.

5. What are the repair options for addressing OBDII code P1250 in an Isuzu?

The repair options include replacing the faulty fuel pump relay, repairing any damaged wiring or connectors, clearing the trouble code, and testing the system to ensure proper functionality.

6. Can a DIY enthusiast fix OBDII code P1250 related to the fuel pump relay control circuit shorted to ground in an Isuzu?

While some aspects of diagnosing and repairing the issue can be done by a DIY enthusiast, it is recommended to seek professional help for a more accurate diagnosis and proper repair to avoid further complications.

7. How much does it typically cost to repair OBDII code P1250 in an Isuzu at a professional auto repair shop?

The cost of repairing OBDII code P1250 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor at a professional auto repair shop.

8. Will resetting the OBDII code P1250 in my Isuzu solve the issue temporarily?

Resetting the trouble code may temporarily turn off the check engine light, but it will not fix the underlying problem causing OBDII code P1250, so it is important to address the root cause of the issue.

9. How urgent is it to address OBDII code P1250 in an Isuzu?

It is important to address OBDII code P1250 promptly to prevent potential fuel delivery issues, engine stalling, and further damage to the fuel pump relay control circuit in your Isuzu.

10. Can OBDII code P1250 in an Isuzu be related to other components besides the fuel pump relay control circuit?

While OBDII code P1250 is specifically related to the fuel pump relay control circuit being shorted to ground, it is possible for other related components such as the fuel pump itself or the engine control module to contribute to the issue.

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