AutoCodes – Ford – P1549 2002 Ford F150

P1549 2002 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 2002 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 2,705

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1549 2002 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 2002 Ford F150 - Intake Manifold Communication Control Circuit Malfunction - AutoCodes.com — P1549 2002 Ford F150 Code - Intake Manifold Communication Control Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1549 2002 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 2002 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 2002 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 2002 Ford F150 code?

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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 P1549 2002 Ford F150 Code

1. What does the OBDII code P1549 indicate on a 2002 Ford F150?

P1549 on a 2002 Ford F150 indicates a malfunction in the Intake Manifold Communication Control Circuit. This typically involves issues with the signals between the intake manifold components and the engine control module.

2. What are common symptoms of code P1549 in a 2002 Ford F150?

Common symptoms include engine performance issues such as rough idling, hesitation during acceleration, decreased fuel efficiency, and the engine may stall. The check engine light will also illuminate.

3. What causes the P1549 code to appear on a 2002 Ford F150?

Potential causes include faulty wiring or connections in the intake manifold control circuit, a defective intake manifold runner control (IMRC) actuator, or a malfunctioning IMRC valve.

4. How can I diagnose the P1549 code in a 2002 Ford F150?

Diagnosis involves using an OBD-II scanner to confirm the code, inspecting the wiring and connectors for damage or loose connections, checking the operation and condition of the IMRC actuator and valve, and possibly using a multimeter to test circuit continuity and resistance.

5. What are some repair tips for fixing the P1549 code on a 2002 Ford F150?

Repairs might include replacing or repairing damaged wiring or connectors, replacing a faulty IMRC actuator or valve, and ensuring that all electrical connections are secure. Itâ€™s also advisable to clear the code with an OBD-II scanner and test drive the vehicle to see if the code returns.

6. Is it safe to drive a 2002 Ford F150 with the P1549 code?

While you can drive the vehicle, doing so with poor engine performance can lead to other issues. It's best to address the problem promptly to avoid potential further damage to the engine or decreased driving safety.

7. Will the P1549 code clear on its own if the issue is resolved in a 2002 Ford F150?

After repairing the fault causing the P1549 code, the code itself will not clear automatically. You will need to use an OBD-II scanner to reset the engineâ€™s computer system and erase the code.

8. How urgent is it to fix a P1549 code on a 2002 Ford F150?

It is fairly urgent to address this issue as it can impact the vehicle's performance and fuel efficiency. Delaying repairs can lead to more significant problems in the engine management system.