P2090Fuel & Air Metering

B Camshaft Position Actuator Control Circuit Low Bank 1

P2090 means the ECM detected a low voltage condition in the B camshaft (exhaust) position actuator control circuit on Bank 1. Causes include a short to ground, wiring problems, or a failed oil control valve.

🚗 Yes, but exhaust cam timing may be affected; repair it soon.

MEDIUM

severity

🎯 Top Causes, Ranked by Likelihood

#1Short to ground in the actuator circuit$50-$250

35%

A pinched or chafed wire pulls the control signal low.

#2Failed camshaft oil control valve (solenoid)$60-$300

35%

An internally shorted solenoid causes a low reading.

#3Corroded or damaged connector$50-$200

20%

Corrosion creates a low-voltage path.

#4ECM driver fault$200-$1000

10%

Rare ECM control driver failure.

🩺 Common Symptoms

Check engine light on
Possible rough idle or hesitation
Reduced power in some conditions
Slight drop in fuel economy

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$350

Shop Cost

$150-$600

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P2090

1Scan for related VVT and camshaft codes

2Inspect the exhaust cam solenoid wiring for shorts to ground

3Test the solenoid resistance

4Check the connector for corrosion

❓ Frequently Asked Questions

Can I drive with a P2090 code?

Short-term yes, but exhaust cam timing may be affected. Repair it soon to protect performance.

How much does it cost to fix P2090?

Wiring fixes are often cheap, while a new oil control valve runs $150 to $600 at a shop.

What is the most common cause of P2090?

A short to ground in the wiring or a failed exhaust cam oil control valve are the most common causes.

🔗 Related Codes

P2088P2091P2094P0013P0014