AutoCodes – Cadillac – P2090 Cadillac

P2090 Cadillac Code - Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

Quick Answer

The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is operating. Common causes include Faulty Exhaust Camshaft Position Actuator Solenoid Valve Bank 1, Exhaust Camshaft Position Actuator Solenoid Valve Bank 1 harness is open or shorted, Exhaust Camshaft Position Actuator Solenoid Valve Bank 1 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: P2090 Cadillac indicates Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1.
Common causes: Common causes include Faulty Exhaust Camshaft Position Actuator Solenoid Valve Bank 1, Exhaust Camshaft Position Actuator Solenoid Valve Bank 1 harness is open or shorted, Exhaust Camshaft Position Actuator Solenoid Valve Bank 1 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 1,404

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 Dec 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2090 Cadillac Description

The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is operating. The Camshaft Position Actuator Solenoid Valve signal from the ECM is Pulse Width Modulated (PWM). The ECM controls the Camshaft Position Actuator Solenoid Valve duty cycle by controlling the amount of solenoid valve ON time. The Camshaft Position Actuator Solenoid Valve controls the advance or the retard of each camshaft. The Camshaft Position Actuator Solenoid Valve controls the oil flow that applies the pressure to advance or retard the camshafts.
Ignition voltage is supplied directly to the Camshaft Position Actuator Solenoid Valve. The ECM controls the solenoid valve by grounding the control circuit with a solid-state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.
The Diagnostic Trouble Code (DTC) will set when the ECM detects a short to ground in the CMP actuator solenoid circuits for greater than 1 second or a cumulative of 5 seconds, when the solenoid is commanded OFF.

OBDII Code P2090 Cadillac - Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1 - AutoCodes.com — P2090 Cadillac Code - Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

What does this mean?

What are the Possible Causes of the DTC P2090 Cadillac?

Faulty Exhaust Camshaft Position Actuator Solenoid Valve Bank 1
Exhaust Camshaft Position Actuator Solenoid Valve Bank 1 harness is open or shorted
Exhaust Camshaft Position Actuator Solenoid Valve Bank 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2090 Cadillac?

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 P2090 Cadillac 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 P2090 Cadillac Code

1. What are the common symptoms of OBDII code P2090 in a Cadillac related to the Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1?

- Common symptoms may include rough idling, reduced engine performance, poor fuel economy, and illuminated check engine light.

2. What are the potential causes of the Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1 code in a Cadillac?

- Possible causes include a faulty camshaft position actuator solenoid, damaged wiring or connectors, low engine oil level, or issues with the engine control module.

3. How can I diagnose the source of the P2090 code in my Cadillac?

- Diagnosis involves checking the camshaft position actuator solenoid, inspecting the wiring for any damage, verifying proper engine oil levels, and using a diagnostic scanner to read live data and monitor sensor readings.

4. Can I drive my Cadillac with the P2090 code present?

- It is not recommended to drive with the P2090 code active, as it can lead to potential engine damage and reduced performance. It's best to address the issue promptly.

5. What are the repair options for fixing the Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1 code in a Cadillac?

- Repair options may include replacing the camshaft position actuator solenoid, repairing any damaged wiring or connectors, ensuring proper engine oil levels, and resetting the engine control module.

6. How much does it typically cost to repair the P2090 code in a Cadillac?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $200 to $500, including parts and labor.

7. Can a DIY enthusiast fix the P2090 code on a Cadillac?

- While some individuals with automotive repair experience may be able to tackle the repairs themselves, dealing with the camshaft position actuator and related components may require specialized tools and knowledge. Professional help is recommended.

8. Will resetting the check engine light make the P2090 code disappear?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the code is not addressed, the light is likely to come back on.

9. Are there any preventive measures I can take to avoid the P2090 code in my Cadillac?

- Regular vehicle maintenance, including oil changes and inspections, can help prevent issues that may trigger the P2090 code related to the camshaft position actuator solenoid.

10. Can a faulty camshaft position sensor trigger the P2090 code in a Cadillac?

- While it's less common, a malfunctioning camshaft position sensor can potentially contribute to the triggering of the P2090 code, as it can affect the proper operation of the camshaft position actuator solenoid.