AutoCodes – Buick – P055B Buick

P055B Buick Code - Intake Camshaft Position Actuator Oil Pressure Sensor Performance

Quick Answer

The Intake Camshaft Position Actuator Oil Pressure Sensor, located in the cylinder head, is a 3-wire sensor comprising of a signal circuit, low reference circuit and the 5-volt reference circuit. Common causes include Faulty Intake Camshaft Position Actuator Oil Pressure Sensor, Intake Camshaft Position Actuator Oil Pressure Sensor harness is open or shorted, Intake Camshaft Position Actuator Oil 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: P055B Buick indicates Intake Camshaft Position Actuator Oil Pressure Sensor Performance.
Common causes: Common causes include Faulty Intake Camshaft Position Actuator Oil Pressure Sensor, Intake Camshaft Position Actuator Oil Pressure Sensor harness is open or shorted, Intake Camshaft Position Actuator Oil 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 1,131

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 Oct 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P055B Buick Description

The Intake Camshaft Position Actuator Oil Pressure Sensor, located in the cylinder head, is a 3-wire sensor comprising of a signal circuit, low reference circuit and the 5-volt reference circuit. The Engine Control Module (ECM) supplies 5 volts to the sensor via the 5-volt reference circuit and provides ground via the low reference circuit. The ECM monitors the signal circuit to determine the sensor voltage is within the normal operating range of approximately 1-4 volts. When the intake camshaft position actuator oil pressure is high, the sensor voltage is high and the ECM senses a high signal voltage. When the intake camshaft position actuator oil pressure is low, the sensor voltage is low and the ECM senses a low signal voltage. The intake camshaft position actuator oil pressure sensor is used by the ECM for variable valve lift performance diagnosis.

OBDII Code P055B Buick - Intake Camshaft Position Actuator Oil Pressure Sensor Performance - AutoCodes.com — P055B Buick Code - Intake Camshaft Position Actuator Oil Pressure Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P055B Buick?

Faulty Intake Camshaft Position Actuator Oil Pressure Sensor
Intake Camshaft Position Actuator Oil Pressure Sensor harness is open or shorted
Intake Camshaft Position Actuator Oil Pressure Sensor circuit poor electrical connection

How to Fix the DTC P055B Buick?

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 P055B Buick 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.

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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 P055B Buick Code

1. What are the common symptoms of OBDII code P055B in a Buick related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance?

The common symptoms include rough idling, reduced engine performance, engine stalling, and illuminated Check Engine light.

2. What are the possible causes of OBDII code P055B in a Buick related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance?

Possible causes include a faulty intake camshaft position actuator, issues with the oil pressure sensor, wiring or connector problems, or low engine oil level.

3. How can I diagnose the OBDII code P055B in my Buick related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance?

Diagnosis typically involves using a scan tool to retrieve the specific code, checking the oil level and condition, inspecting the wiring and connectors, and testing the intake camshaft position actuator and oil pressure sensor.

4. What is the recommended repair for OBDII code P055B in a Buick related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance?

The recommended repair may involve replacing the faulty intake camshaft position actuator, oil pressure sensor, or repairing any wiring or connector issues. Ensuring proper engine oil level and quality is also essential.

5. Are there any preventive maintenance tips to avoid encountering OBDII code P055B related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance in my Buick?

Regularly checking and maintaining proper engine oil levels, getting scheduled oil changes, and addressing any engine performance issues promptly can help prevent encountering this OBDII code.

6. Can driving with OBDII code P055B related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance cause further damage to my Buick's engine?

Continuing to drive with this code may lead to poor engine performance, potential engine stalling, and further damage to engine components. It is recommended to address the issue promptly.

7. How much does it typically cost to repair OBDII code P055B related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance in a Buick?

The cost of repair can vary depending on the specific issue causing the code, parts needed for replacement, and labor charges. It's advisable to consult with a mechanic for an accurate cost estimate.

8. Can resetting the Check Engine light resolve OBDII code P055B related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance in a Buick?

Resetting the Check Engine light may temporarily turn off the light, but it will not fix the underlying issue causing the code. It's important to diagnose and address the root cause of the problem.

9. Are there any technical service bulletins (TSBs) or recalls related to OBDII code P055B in Buick vehicles with issues concerning the Intake Camshaft Position Actuator Oil Pressure Sensor Performance?

It's recommended to check with a Buick dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any relevant TSBs or recalls for this specific OBDII code.

10. How long can I safely drive my Buick with OBDII code P055B related to the Intake Camshaft Position Actuator Oil Pressure Sensor Performance before getting it repaired?

It is not advisable to drive for an extended period with this code present, as it can lead to engine performance issues and potential damage. It's best to address the problem as soon as possible.