AutoCodes – Ford – P1549 1997 Ford F150

P1549 1997 Ford F150 Code - Intake Manifold Communication Control Circuit Malfunction

Quick Answer

With the key ON or engine running, the Powertrain Control Module (PCM) detects a fault in the Intake Manifold Communication Control (IMCC) or ITV control circuit Common causes include Faulty Intake Manifold Temperature Valve, Intake Manifold Temperature Valve harness is open or shorted, Intake Manifold Temperature Valve circuit poor electrical connection. 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
P1549 1997 Ford F150 indicates Intake Manifold Communication Control Circuit Malfunction.
Common causes
Common causes include Faulty Intake Manifold Temperature Valve, Intake Manifold Temperature Valve harness is open or shorted, Intake Manifold Temperature Valve circuit poor electrical connection.
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.
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Code Popularity 2,388
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 29, 2019
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Code P1549 1997 Ford F150 Description

With the key ON or engine running, the Powertrain Control Module (PCM) detects a fault in the Intake Manifold Communication Control (IMCC) or ITV control circuit
OBDII Code P1549 1997 Ford F150 - Intake Manifold Communication Control Circuit Malfunction - AutoCodes.com
P1549 1997 Ford F150 Code - Intake Manifold Communication Control Circuit Malfunction

What are the Possible Causes of the DTC P1549 1997 Ford F150?

  • Faulty Intake Manifold Temperature Valve
  • Intake Manifold Temperature Valve harness is open or shorted
  • Intake Manifold Temperature Valve circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1549 1997 Ford F150?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1549 1997 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1549 1997 Ford F150 code?

Need more information on how to fix the P1549 1997 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1549 1997 Ford F150 code diagnosed by a professional: Find a repair shop in your area

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 P1549 1997 Ford F150 Code

1. What are common symptoms of OBDII code P1549 on a 1997 Ford F150?

The common symptoms include rough idling, stalling, poor engine performance, and the illumination of the check engine light.

2. What causes the Intake Manifold Communication Control Circuit Malfunction in a 1997 Ford F150?

The P1549 code is typically triggered by issues such as a faulty intake manifold runner control valve, damaged wiring, or a malfunctioning PCM.

3. How can I diagnose the Intake Manifold Communication Control Circuit Malfunction in my 1997 Ford F150?

Diagnosing the issue involves using an OBDII scanner to retrieve the fault code, inspecting the intake manifold runner control valve, and checking the wiring for any visible damage.

4. Can I still drive my 1997 Ford F150 with the P1549 code?

It is not recommended to drive the vehicle with the P1549 code as it can lead to further damage and potential safety hazards. It is best to address the issue promptly.

5. How do I repair the Intake Manifold Communication Control Circuit Malfunction in my 1997 Ford F150?

Repairing the issue may involve replacing the intake manifold runner control valve, repairing damaged wiring, or reprogramming the PCM. It is advisable to consult a professional mechanic for proper repair.

6. Are there any DIY tips for fixing the P1549 code on a 1997 Ford F150?

While some simple tasks like checking for loose connections or damaged wires can be done DIY, it is recommended to seek professional help for a thorough diagnosis and repair of the issue.

7. Will resetting the check engine light fix the P1549 code on a 1997 Ford F150?

Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing the Intake Manifold Communication Control Circuit Malfunction.

8. Can a dirty or clogged intake manifold cause the P1549 code on a 1997 Ford F150?

While a dirty or clogged intake manifold may affect engine performance, it is not a direct cause of the P1549 code. The code is more likely related to specific components like the control valve or wiring.

9. How much does it cost to repair the Intake Manifold Communication Control Circuit Malfunction in a 1997 Ford F150?

The cost of repairing the P1549 code can vary depending on the specific issue and labor rates in your area. It is advisable to get estimates from different mechanics or repair shops.

10. Can the P1549 code on a 1997 Ford F150 cause permanent damage if left unaddressed?

Continued driving with the P1549 code can potentially cause damage to other engine components, reduce fuel efficiency, and lead to more costly repairs over time. It is important to address the issue promptly.

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