AutoCodes – BMW – P053B BMW

P053B BMW 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 BMW 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,335

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC P053B BMW?

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 BMW?

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 BMW 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 BMW code?

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

Need Help with the Code?

Get the P053B BMW 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 P053B BMW Code

1. What are common symptoms of OBDII code P053B in a BMW related to the Positive Crankcase Ventilation Heater Control Circuit Low?

Symptoms may include rough idle, decreased fuel efficiency, and the illumination of the check engine light.

2. What are some possible causes of the Positive Crankcase Ventilation Heater Control Circuit Low code in a BMW?

Common causes include a faulty positive crankcase ventilation heater, damaged wiring or connectors, or a malfunctioning PCM.

3. How can I diagnose the cause of OBDII code P053B in my BMW?

Diagnosing this code may involve checking the positive crankcase ventilation heater for continuity, inspecting wiring for damage, and using a scan tool to monitor sensor data.

4. Can I still drive my BMW with the P053B code present?

It is generally not recommended to drive your BMW with the P053B code present, as it can lead to engine performance issues and potential damage if left unresolved.

5. How can I repair OBDII code P053B in my BMW?

Repairing this code may involve replacing the positive crankcase ventilation heater, repairing damaged wiring, or reprogramming the PCM.

6. Is it possible to clear the P053B code in a BMW without fixing the underlying issue?

While clearing the code temporarily may turn off the check engine light, the issue causing the code will persist and likely trigger the code again.

7. How much does it typically cost to repair OBDII code P053B in a BMW?

Repair costs can vary depending on the specific cause of the code, but it is advisable to consult a qualified mechanic for an accurate diagnosis and cost estimate.

8. Can a DIY enthusiast fix the Positive Crankcase Ventilation Heater Control Circuit Low issue in a BMW?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this issue, but it is recommended to seek professional help for accurate diagnosis and repair.

9. What long-term effects can OBDII code P053B have on a BMW if left untreated?

Ignoring this code can potentially lead to increased emissions, reduced engine performance, and other related issues that can impact the overall health of your BMW.

10. How can I prevent OBDII code P053B from occurring in my BMW in the future?

Regular maintenance, including checking the positive crankcase ventilation system and addressing any issues promptly, can help prevent the recurrence of this code in your BMW.