P2090 GMC 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 GMC 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.
Code P2090 GMC Description
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.
What are the Possible Causes of the DTC P2090 GMC?
- 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 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 P2090 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.
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Frequently Asked Questions about P2090 GMC Code
1. What are common symptoms of OBDII code P2090 in a GMC vehicle?
- Common symptoms include rough idling, reduced engine performance, stalling, and an illuminated check engine light.
2. What are the possible causes of the Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1 code?
- Potential causes include a faulty camshaft position actuator solenoid valve, wiring issues, low engine oil levels, or a malfunctioning engine control module (ECM).
3. Can driving with OBDII code P2090 cause further damage to the vehicle?
- Continuing to drive with this code can potentially lead to more severe engine issues over time, so it is recommended to address the problem promptly.
4. How can I diagnose the cause of OBDII code P2090 in my GMC vehicle?
- Diagnosis typically involves using a scan tool to check for the specific code, inspecting the camshaft position actuator solenoid valve, and testing the wiring for any faults.
5. Are there any DIY repair tips for addressing code P2090 in a GMC vehicle?
- DIY repairs may include checking and cleaning the electrical connections, replacing the camshaft position actuator solenoid valve, or ensuring proper engine oil levels.
6. How much does it cost to repair OBDII code P2090 in a GMC vehicle?
- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars at a professional repair shop.
7. Can resetting the check engine light resolve code P2090 temporarily?
- Resetting the check engine light may temporarily turn it off, but the underlying issue causing the code will likely persist and trigger the light again if not addressed.
8. Is it safe to drive my GMC vehicle with code P2090?
- While the vehicle may still be operable with this code, it is best to address the issue promptly to prevent potential engine damage and maintain optimal performance.
9. How long does it typically take to repair OBDII code P2090 in a GMC vehicle?
- The repair time can vary based on the complexity of the issue, but it may take a few hours to a full day for a mechanic to diagnose and fix the problem.
10. Can a faulty camshaft position actuator solenoid valve be cleaned or repaired, or does it need to be replaced?
- In most cases, a faulty camshaft position actuator solenoid valve will need to be replaced rather than repaired, as cleaning may not resolve the underlying issue.
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