AutoCodes – Generic – P2090

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

Quick Answer

The Camshaft Position (CMP) 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 Bank 1, Exhaust Camshaft Position Actuator Bank 1 Solenoid harness is open or shorted, Exhaust Camshaft Position Actuator Bank 1 Solenoid 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 indicates Exhaust Camshaft Position Actuator Solenoid Control Circuit Low Voltage Bank 1.
Common causes: Common causes include Faulty Exhaust Camshaft Position Actuator Solenoid Bank 1, Exhaust Camshaft Position Actuator Bank 1 Solenoid harness is open or shorted, Exhaust Camshaft Position Actuator Bank 1 Solenoid 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 27,799

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 Nov 25, 2020

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

The Camshaft Position (CMP) Actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is operating. The CMP actuator solenoid signal from the ECM is Pulse Width Modulated (PWM). The ECM controls the CMP actuator solenoid duty cycle by controlling the amount of solenoid ON time. The CMP actuator solenoid controls the advance or the retard of each camshaft. The CMP actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.
Ignition voltage is supplied directly to the CMP actuator solenoid. The ECM controls the solenoid 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 if the ECM detects a short to ground in the CMP actuator solenoid circuits for more than 4 seconds or a cumulative of 50 seconds, when the solenoid is commanded OFF.

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

What does this mean?

What are the Possible Causes of the DTC P2090?

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

How to Fix the DTC P2090?

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 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 P2090 code?

Need more information on how to fix the P2090 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2090 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2090 Audi — Camshaft Position Actuator 'B' Control Circuit Short To Ground Bank 1
P2090 BMW — 'B' Camshaft Position Actuator Control Circuit Low Bank 1
P2090 Buick — Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1
P2090 Cadillac — Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1
P2090 Chevrolet — Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1
P2090 Chrysler — Bank 1 Camshaft 2 Position Actuator
P2090 Dodge — Bank 1 Camshaft 2 Position Actuator
P2090 Ford — 'B' Camshaft Position Actuator Control Circuit Low Bank 1
P2090 GMC — Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1
P2090 Jeep — Bank 1 Camshaft 2 Position Actuator
P2090 Lincoln — 'B' Camshaft Position Actuator Control Circuit Low Bank 1
P2090 Mercedes-Benz — 'B' Camshaft Position Actuator Control Circuit Low Bank 1
P2090 Mercury — 'B' Camshaft Position Actuator Control Circuit Low Bank 1
P2090 MINI — 'B' Camshaft Position Actuator Control Circuit Low Bank 1
P2090 Suzuki — Exhaust Camshaft Position Actuator Solenoid Control Circuit Low Voltage Bank 1
P2090 Volkswagen — Camshaft Position Actuator 'B' Control Circuit Short To Ground Bank 1

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 Code

1. What are common symptoms of OBDII code P2090?

- Common symptoms include rough idling, engine misfires, loss of power, and the illumination of the Check Engine Light.

2. What causes the Exhaust Camshaft Position Actuator Solenoid Control Circuit Low Voltage Bank 1 code?

- The code P2090 is typically caused by issues with the exhaust camshaft position actuator solenoid, wiring problems, or a faulty control module.

3. How can I diagnose the cause of OBDII code P2090?

- Diagnosing this code involves checking the wiring and connectors related to the exhaust camshaft position actuator solenoid, testing the solenoid itself, and examining the control module for any faults.

4. Can a dirty engine oil or filter cause code P2090 to trigger?

- Yes, a dirty engine oil or filter can affect the performance of the camshaft position actuator solenoid, potentially leading to the low voltage condition and triggering the code.

5. What is the recommended repair for OBDII code P2090?

- The recommended repair for code P2090 involves inspecting and repairing any damaged wiring, replacing the exhaust camshaft position actuator solenoid if necessary, and clearing the code from the vehicle's computer.

6. Is it safe to continue driving with OBDII code P2090 present?

- It is not recommended to continue driving with code P2090 present, as it can lead to further engine performance issues and potential damage if left unresolved.

7. How can I prevent OBDII code P2090 from recurring?

- Regular maintenance, including timely oil changes and inspections of the camshaft position actuator solenoid and related components, can help prevent code P2090 from recurring.

8. Can I reset the Check Engine Light after repairing OBDII code P2090 myself?

- Yes, after completing the necessary repairs for code P2090, you can reset the Check Engine Light using an OBDII scanner to clear the code from the system.

9. Does OBDII code P2090 affect fuel efficiency?

- Yes, code P2090 can impact fuel efficiency due to the potential engine misfires and performance issues associated with the exhaust camshaft position actuator solenoid.

10. How long does it typically take to repair OBDII code P2090?

- The repair time for code P2090 can vary depending on the exact cause of the issue, but it typically takes a few hours to diagnose, repair, and clear the code from the vehicle's computer.