AutoCodes – GMC – P055C GMC

P055C GMC Code - Intake Camshaft Position Actuator Oil Pressure Sensor Circuit Low Voltage

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: P055C GMC indicates Intake Camshaft Position Actuator Oil Pressure Sensor Circuit Low Voltage.
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 744

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 P055C GMC 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 P055C GMC - Intake Camshaft Position Actuator Oil Pressure Sensor Circuit Low Voltage - AutoCodes.com — P055C GMC Code - Intake Camshaft Position Actuator Oil Pressure Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P055C GMC?

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 P055C GMC?

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 P055C GMC 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 P055C GMC 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 P055C GMC Code

1. What are the common symptoms of OBDII code P055C in a GMC vehicle?

The common symptoms of OBDII code P055C include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.

2. What can cause the Intake Camshaft Position Actuator Oil Pressure Sensor Circuit Low Voltage code in a GMC vehicle?

The P055C code in a GMC vehicle can be triggered by issues such as a faulty oil pressure sensor, wiring problems, low oil pressure, or a malfunctioning camshaft position actuator.

3. How serious is the P055C OBDII code in a GMC vehicle?

The P055C code should be addressed promptly as it can lead to engine performance issues and potential long-term damage if left unresolved.

4. Can a DIY enthusiast repair the Intake Camshaft Position Actuator Oil Pressure Sensor Circuit Low Voltage code?

While some DIY enthusiasts may be able to address the P055C code by checking and replacing the oil pressure sensor or fixing wiring issues, it is recommended to consult with a professional mechanic for an accurate diagnosis and repair.

5. How can I diagnose the P055C code in my GMC vehicle?

Diagnosing the P055C code involves using an OBDII scanner to retrieve the specific fault code, inspecting the oil pressure sensor and its wiring, and testing the camshaft position actuator for proper functionality.

6. Is it safe to continue driving with the P055C OBDII code illuminated?

It is not advisable to continue driving with the P055C code illuminated as it can lead to potential engine issues and decreased vehicle performance.

7. What are some repair tips for fixing the P055C code in a GMC vehicle?

Repair tips for addressing the P055C code may include checking and replacing the oil pressure sensor, repairing any damaged wiring, ensuring proper oil levels and pressure, and testing the camshaft position actuator.

8. Can weather conditions affect the triggering of the P055C OBDII code?

Extreme weather conditions, such as extremely low temperatures, can potentially impact the oil pressure sensor and trigger the P055C code in a GMC vehicle.

9. How long does it typically take to repair the Intake Camshaft Position Actuator Oil Pressure Sensor Circuit Low Voltage code?

The repair time for the P055C code can vary depending on the exact cause of the issue, but it may take a few hours to a full day for a mechanic to diagnose and fix the problem.

10. Will resetting the OBDII system clear the P055C code in a GMC vehicle?

Resetting the OBDII system may temporarily clear the P055C code, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem to prevent future occurrences.