HomeTrouble CodesP0013

P0013 — B Camshaft Position Actuator Control Circuitopen Bank 1

Generic OBD-II · all makesPowertrain (engine & transmission)

P0013 indicates an electrical open circuit in the control system for the exhaust camshaft position actuator on engine bank 1. This prevents the engine computer from adjusting valve timing properly. It is typically related to wiring, connectors, or the solenoid itself rather than mechanical timing failure.

Symptoms

What causes it — most likely first

1. Open or shorted wiring harness near the camshaft actuator solenoid

Physical damage from heat or vibration often breaks the wire insulation or conductors. This interrupts the signal between the computer and the actuator.

2. Failed camshaft position actuator solenoid with internal electrical open

The internal coil within the solenoid can burn out or break over time. This prevents the solenoid from receiving or acting on control signals.

3. Blown fuse in the variable valve timing control circuit

A power surge or short circuit can cause the protective fuse to fail. This cuts all power to the actuator control system.

4. Corroded or loose electrical connector at the solenoid

Oil contamination or moisture can cause terminal corrosion inside the plug. This creates high resistance or a complete loss of connection.

5. Damaged pins or wiring at the engine control module connector

Wiring near the computer can chafe or connectors may become unseated. This interrupts the circuit path before it reaches the control module.

6. Internal failure of the engine control module (PCM/ECM)

The driver circuit inside the computer may fail, though this is uncommon. This should only be considered after all external wiring and components are verified.

How it's diagnosed

  1. Visually inspect the wiring harness and connectors for physical damage
  2. Verify the condition and rating of the relevant control circuit fuse
  3. Measure solenoid coil resistance and compare to manufacturer specifications
  4. Check for reference voltage and ground at the solenoid connector
  5. Test continuity of control wires between the solenoid and the PCM
  6. Clear codes and perform a road test to verify repair success

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationSAE generic — identical on every make

Frequently asked

Is the engine computer usually the problem for P0013?

No, PCM failure is extremely rare; wiring and solenoids fail much more frequently.

Can low oil cause this code?

Low oil pressure affects mechanical timing, but this code indicates an electrical circuit fault.

Is it safe to drive with this code active?

The vehicle may run poorly or consume more fuel, so repairs should be scheduled soon.

Does this require timing chain replacement?

No, this code relates to the electronic control circuit, not the mechanical timing chain itself.