AutoCodes – Mercury – P053B Mercury

P053B Mercury Code - Positive Crankcase Ventilation Heater Control Circuit Low

Quick Answer

The Engine Control Module (ECM) monitors the Positive Crankcase Ventilation Heater Control Circuit. Common causes include Faulty Positive Crankcase Ventilation (PCV) heater assembly, Positive Crankcase Ventilation (PCV) heater assembly harness is open or shorted, Positive Crankcase Ventilation (PCV) heater assembly 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: P053B Mercury indicates Positive Crankcase Ventilation Heater Control Circuit Low.
Common causes: Common causes include Faulty Positive Crankcase Ventilation (PCV) heater assembly, Positive Crankcase Ventilation (PCV) heater assembly harness is open or shorted, Positive Crankcase Ventilation (PCV) heater assembly 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 1,099

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P053B Mercury Description

The Engine Control Module (ECM) monitors the Positive Crankcase Ventilation Heater Control Circuit. The P053B codes set when the Powertrain Control Module (PCM) detects that the actual Positive Crankcase Ventilation Heater Control (PCVHC) circuit voltage is less than the desired voltage.

OBDII Code P053B Mercury - Positive Crankcase Ventilation Heater Control Circuit Low - AutoCodes.com — P053B Mercury Code - Positive Crankcase Ventilation Heater Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P053B Mercury?

Faulty Positive Crankcase Ventilation (PCV) heater assembly
Positive Crankcase Ventilation (PCV) heater assembly harness is open or shorted
Positive Crankcase Ventilation (PCV) heater assembly circuit poor electrical connection

How to Fix the DTC P053B Mercury?

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 P053B Mercury 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 P053B Mercury code?

Need more information on how to fix the P053B Mercury code? Get Access to Factory Service Manuals

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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 P053B Mercury Code

1. What are the common symptoms of OBDII code P053B in a Mercury vehicle?

- Common symptoms include rough idling, poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P053B Mercury indicate?

- The code P053B indicates an issue with the Positive Crankcase Ventilation (PCV) heater control circuit being detected as low.

3. What are the possible causes of the Positive Crankcase Ventilation Heater Control Circuit Low code?

- Possible causes include a faulty PCV heater, damaged wiring or connectors in the circuit, a blown fuse, or a malfunctioning PCM (Powertrain Control Module).

4. How can I diagnose the cause of OBDII code P053B in my Mercury?

- To diagnose the issue, you can use a scan tool to read the code and then inspect the PCV heater, check the wiring and connectors, test the fuse, and perform a PCM scan for any related errors.

5. Is it safe to drive my Mercury with the P053B trouble code illuminated?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent potential damage to the engine or emissions system.

6. Can I repair the Positive Crankcase Ventilation Heater Control Circuit Low issue on my own?

- Depending on your skill level and access to tools, you may be able to repair the issue yourself by replacing the faulty PCV heater, repairing damaged wiring, or addressing any other identified issues.

7. How much does it cost to fix OBDII code P053B in a Mercury at a repair shop?

- The cost of fixing this code at a repair shop can vary depending on the exact cause of the issue, but it may range from $100 to $300 or more, including parts and labor.

8. Will resetting the OBDII code P053B clear the issue in my Mercury?

- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the P053B code to appear.

9. How important is it to address the Positive Crankcase Ventilation Heater Control Circuit Low code promptly?

- It is important to address the issue promptly to ensure optimal engine performance, fuel efficiency, and to prevent potential damage to other components in the vehicle.

10. Can a faulty PCV heater impact other systems in my Mercury besides triggering the P053B code?

- Yes, a faulty PCV heater can lead to increased emissions, poor engine performance, potential oil leaks, and may trigger additional trouble codes if not addressed in a timely manner.