AutoCodes – Generic – P053B

P053B 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 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 3,606

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

What does this mean?

What are the Possible Causes of the DTC P053B?

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?

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 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 code?

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Need Help with the Code?

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Information for Specific Makes

P053B BMW — Positive Crankcase Ventilation Heater Control Circuit Low
P053B Ford — Positive Crankcase Ventilation Heater Control Circuit Low
P053B Lincoln — Positive Crankcase Ventilation Heater Control Circuit Low
P053B Mercury — Positive Crankcase Ventilation Heater Control Circuit Low
P053B MINI — Positive Crankcase Ventilation Heater Control Circuit Low

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.