Engine-CodesFord – P1187 Ford

P1187 Ford Code - Variant Selection

Quick Answer

The P1187 Ford diagnostic trouble code (DTC) relates to "Variant Selection" in the vehicle's engine control module (ECM). Common causes include Faulty engine sensors (e.g., oxygen sensor, MAP sensor), Wiring issues (e.g., damaged or corroded wires), ECM software glitch. 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
P1187 Ford indicates Variant Selection.
Common causes
Common causes include Faulty engine sensors (e.g., oxygen sensor, MAP sensor), Wiring issues (e.g., damaged or corroded wires), ECM software glitch.
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 P1187 Ford Description

The P1187 Ford diagnostic trouble code (DTC) relates to "Variant Selection" in the vehicle's engine control module (ECM). This code indicates that the ECM has detected an issue with the variant selection, which refers to the specific fuel map or calibration being used by the engine for optimal performance. The ECM uses different variants based on factors such as engine load, speed, temperature, and other operating conditions to ensure the engine runs efficiently and meets emission standards.

OBDII Code P1187 Ford - Variant Selection
P1187 Ford Code - Variant Selection

Common Causes of P1187 Ford

  1. Faulty engine sensors (e.g., oxygen sensor, MAP sensor)
  2. Wiring issues (e.g., damaged or corroded wires)
  3. ECM software glitch
  4. Incorrectly calibrated variant selection
  5. Poor quality or contaminated fuel

Symptoms of P1187 Ford

  1. Decreased engine performance
  2. Reduced fuel efficiency
  3. Rough idling or hesitation
  4. Stalling
  5. Increased emissions

How to Fix P1187 Ford

  1. Use a diagnostic scan tool to retrieve and record the fault codes.
  2. Inspect and test engine sensors and wiring for any faults or damage.
  3. Check the ECM software for updates or glitches and reprogram if necessary.
  4. Verify and recalibrate the variant selection settings in the ECM.
  5. Clear the fault codes and perform a test drive to verify the repair.

Cost to Fix P1187 Ford

The cost of repairing a P1187 Ford code can vary depending on the specific cause of the issue. On average, the repair costs for this type of problem can range from $100 to $500, including parts and labor. It's important to note that diagnostic time and labor rates can vary between auto repair shops, so it's advisable to check with local shops for a more accurate estimate. Additionally, the cost may be higher if components need to be replaced or if specialized equipment is required for the repair.

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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 P1187 Ford Code

1. What are the common symptoms of OBDII code P1187 in a Ford vehicle?

- Common symptoms include rough idling, poor engine performance, hesitation during acceleration, and potential stalling.

2. What does OBDII code P1187 in a Ford indicate?

- OBDII code P1187 typically indicates a fault related to Variant Selection in the fuel control system.

3. What are the possible causes of OBDII code P1187 in a Ford?

- Potential causes include a faulty fuel pressure sensor, issues with the fuel injection system, vacuum leaks, or a malfunctioning fuel pump.

4. How can I diagnose the OBDII code P1187 in my Ford?

- Diagnosing this code usually involves performing a thorough inspection of the fuel system components, checking for vacuum leaks, and using a diagnostic scan tool to analyze data.

5. Can I continue driving my Ford with OBDII code P1187 present?

- It is not recommended to drive your vehicle with this code present, as it can lead to further engine damage and decreased fuel efficiency.

6. How can I repair OBDII code P1187 in my Ford?

- Repairing this code may involve replacing a faulty fuel pressure sensor, repairing any vacuum leaks, cleaning or replacing fuel injectors, or addressing issues with the fuel pump.

7. Will resetting the OBDII code P1187 in my Ford make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return.

8. Can a DIY enthusiast fix OBDII code P1187 in a Ford?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code, but it is recommended to seek professional help for accurate diagnosis and repair.

9. Are there any preventive measures to avoid OBDII code P1187 in a Ford?

- Regular maintenance of the fuel system, such as fuel filter replacements and system inspections, can help prevent issues that may trigger this code.

10. How long does it usually take to repair OBDII code P1187 in a Ford?

- The repair time can vary depending on the exact cause of the code and the complexity of the repair needed. It is advisable to consult a mechanic for a more accurate estimate.

Discuss the causes and fixes for P1187 Ford OBDII Code

  • 06 lincolin mark with a 5.4 triton customer c/o shutter or a shakey loss of power, and check engine lite comes this happens intermit. code P1187 EOT out of range (oil is getting hot) changed oil and replaced thermostat to see if it would change-nope

  • Ford Fiesta TDCI. No parts has been replaced. We repaired can wires that had tracking system wires connected to it. Swithes warning light on in instument cluster ( yellow round light with exclamation mark inside the circle). Before we repaired the can wires it would go into limp mode intermittandly. Switch ign off & on and you can drive again.