AutoCodes – Mercury – C101B Mercury

C101B Mercury Code - Vacuum Pressure Sensor Circuit B

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Vacuum Pressure Sensor. Common causes include Faulty Vacuum Pressure Sensor, Vacuum Pressure Sensor harness is open or shorted, Vacuum Pressure Sensor 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: C101B Mercury indicates Vacuum Pressure Sensor Circuit B.
Common causes: Common causes include Faulty Vacuum Pressure Sensor, Vacuum Pressure Sensor harness is open or shorted, Vacuum Pressure Sensor 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 954

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 Aug 05, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C101B Mercury Description

The Anti-Lock Brake System (ABS) Module monitors the Vacuum Pressure Sensor. The ABS Module sets the OBDII code when the Vacuum Pressure Sensor is not to factory specifications.

OBDII Code C101B Mercury - Vacuum Pressure Sensor Circuit B - AutoCodes.com — C101B Mercury Code - Vacuum Pressure Sensor Circuit B

What does this mean?

What are the Possible Causes of the DTC C101B Mercury?

Faulty Vacuum Pressure Sensor
Vacuum Pressure Sensor harness is open or shorted
Vacuum Pressure Sensor circuit poor electrical connection

How to Fix the DTC C101B 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 does this mean?

Code Tech Notes

C101B:1C Vacuum Pressure Sensor Circuit B: Circuit Voltage Out of Range
C101B:62 Vacuum Pressure Sensor Circuit B: Signal Compare Failure
C101B:64 Vacuum Pressure Sensor Circuit B: Signal Plausibility Failure

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C101B 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 C101B Mercury 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 C101B Mercury Code

1. What are the common symptoms of OBDII code C101B Mercury?

The common symptoms of OBDII code C101B Mercury include rough idling, stalling, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the Vacuum Pressure Sensor Circuit B refer to in relation to OBDII code C101B Mercury?

The Vacuum Pressure Sensor Circuit B is a component in the vehicle's engine control system that monitors the pressure of the vacuum in the intake manifold.

3. What are some possible causes of OBDII code C101B Mercury?

Possible causes of OBDII code C101B Mercury include a faulty vacuum pressure sensor, damaged wiring or connectors in the sensor circuit, or a vacuum leak in the intake system.

4. How can I diagnose the Vacuum Pressure Sensor Circuit B for OBDII code C101B Mercury?

To diagnose the Vacuum Pressure Sensor Circuit B, you can use a diagnostic scanner to read the trouble codes, visually inspect the sensor and its wiring for any damage, and perform a vacuum leak test in the intake system.

5. Can I drive my vehicle with OBDII code C101B Mercury?

It is generally not recommended to drive your vehicle with OBDII code C101B Mercury, as it can lead to further damage and decreased performance. It is best to address the issue as soon as possible.

6. How can I repair OBDII code C101B Mercury?

To repair OBDII code C101B Mercury, you may need to replace the vacuum pressure sensor, repair any damaged wiring or connectors, or fix any vacuum leaks in the intake system.

7. Is it possible to reset OBDII code C101B Mercury without making any repairs?

Resetting the code without making any repairs is not recommended, as the underlying issue causing the code may persist and lead to more serious problems in the future.

8. How much does it cost to fix OBDII code C101B Mercury at a repair shop?

The cost of fixing OBDII code C101B Mercury at a repair shop can vary depending on the exact cause of the issue, the labor rates in your area, and the price of any necessary replacement parts.

9. Can a DIY enthusiast repair OBDII code C101B Mercury at home?

A DIY enthusiast with the necessary tools and knowledge may be able to repair OBDII code C101B Mercury at home, especially if the issue is related to simple fixes like replacing the sensor or repairing wiring.

10. How often does OBDII code C101B Mercury occur in Mercury vehicles?

OBDII code C101B Mercury can occur in Mercury vehicles with certain models and years, especially if there are underlying issues with the vacuum pressure sensor circuit or intake system.