DOBD DashX ☰ Browse all codes
EnglishDeutschFrançais
P0020

A Camshaft Position Actuator A Control Circuit/Open Bank 2

Variable valve timing (VVT) Generic OBD-II High

What it means

P0020 means the ECM has detected an open in the control circuit for the bank 2 intake camshaft actuator (the VVT solenoid). With the circuit open the ECM can't vary cam timing on that bank, so it defaults to a fixed position. That typically causes reduced power, a rougher idle, and slightly worse economy — not a no-start. The usual cause is wiring or the solenoid itself.

High

Can I keep driving? Usually yes — the cam falls back to a default timing, so expect reduced power and economy rather than a breakdown; repair to clear the fault.

Common symptoms

What you'll notice

Common causes

Most likely first

  1. Open or short in the VVT actuator control wiring (most common)
  2. Corroded or loose solenoid connector
  3. Faulty camshaft actuator (phaser) solenoid on bank 2
  4. Low or dirty oil affecting the solenoid
  5. Failed ECM (rare)

How to diagnose & fix

Work through it in order

  1. Inspect the bank 2 VVT solenoid connector and wiring for opens, shorts, or corrosion.
  2. Measure the solenoid resistance and compare to spec; replace if out of range.
  3. Check power and ground to the control circuit.
  4. Verify oil level and condition.
  5. If the circuit and solenoid are good, suspect the ECM. Clear and retest.

FAQ

Quick answers

Is it safe to drive with P0020?+
Yes, for short trips. The engine defaults to a safe cam position, so you'll notice weaker performance but not a breakdown. Fix it to restore power and economy.
Can I just clear P0020?+
It will return while the circuit is open. This is an electrical fault, so trace the wiring or replace the solenoid before clearing.

Related codes

Often seen with P0020

P0021A Camshaft Position - Timing Over-AdvancedP0022A Camshaft Position - Timing Over-RetardedP0010A Camshaft Position Actuator A Control Cir

Read & clear P0020 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX