Code Definition

P0013 — Camshaft Position B Actuator Circuit / Open Bank 1

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Toyota

About P0013

P0013 is a generic (obd-ii standard) powertrain diagnostic trouble code recorded for Toyota vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0013 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; and a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0013 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0013 code sets when the Engine Control Module (ECM) detects an open circuit fault on the Bank 1 exhaust camshaft Oil Control Valve (OCV) actuator circuit. The 'B' camshaft designation refers to the exhaust cam on engines with Dual Variable Valve Timing, and the OCV is a duty cycle solenoid that modulates engine oil flow into the exhaust cam phaser to advance or retard exhaust valve timing. The ECM detects the fault by monitoring the voltage on its low side driver pin; when the solenoid is commanded on and the return voltage remains at the battery reference rail, the ECM infers that curren...

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