P0023 Exhaust Camshaft Position Actuator Circuit/Open Bank 2

P0023 points to an exhaust camshaft position actuator circuit or open-circuit fault on bank 2. The code centers on the actuator control circuit.

Code status

Needs verification

Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.

System: Fuel / Air
Scope: iso-sae-controlled-p0
Standard: SAE J2012 / ISO 15031-6
Source: legacy-import

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace the exhaust cam actuator until the circuit is checked for opens, shorts, poor terminals, and oil contamination.

Useful checks before replacing parts

Inspect bank 2 exhaust cam actuator connector fit, wiring continuity, control circuit, power feed, and terminal condition.
Check oil level and oil condition because actuator response can be affected by lubrication faults as well as circuit faults.
Compare commanded exhaust cam movement with actual cam position and review related correlation or actuator codes.

Related OBD-II codes

These nearby fuel / air entries can help compare wording and fault area. They may share the same verification status as the source database.