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DTC code page

P0023: B Camshaft Position Actuator Circuit / Open (Bank 2)

Quick answer: The ECU detects an electrical fault in the Bank 2 exhaust cam actuator control circuit.

Drivers also search this fault as bank 2 exhaust cam actuator circuit, VVT exhaust actuator circuit open bank 2, bank 2 exhaust oil control solenoid circuit.

Severity: medium Family: powertrain Related paths: 16
Meaning

What P0023 usually means

P0023 is the exhaust-bank counterpart that completes the practical Bank 2 actuator circuit set. It says the ECU is not seeing the expected electrical behavior from the Bank 2 exhaust cam actuator circuit. That usually sends you toward solenoid resistance, wiring continuity, connector integrity, and bank-specific harness routing before condemning the timing hardware itself. If the exhaust cam stays uncontrolled long enough, the fault can overlap with P0024 or P0017-style performance and correlation complaints, but the smarter first move is to prove the electrical command path.

Fast triage

Start here before chasing parts

  • Scan first: save freeze-frame and pending codes before clearing anything.
  • Confirm the complaint: compare the stored code with current drivability symptoms.
  • Use context: trims, live data, and related codes usually narrow the fault faster than guesswork.
  • Work simplest to hardest: leaks, connectors, maintenance items, and known patterns before expensive components.
Initial checks

What to check first

  • Verify bank and cam orientation before testing the wrong actuator.
  • Inspect the Bank 2 exhaust actuator connector and nearby harness for heat, oil, or chafing damage.
  • Look for related P0024, P0021, P0009, or P0017 faults to understand whether the electrical problem has already created timing symptoms.
Driving risk

Can you keep driving?

P0023 often permits limited driving, but reduced power, roughness, or companion timing faults make quick diagnosis worthwhile.

Moderate urgency: This code often allows short-term driving, but the right fix usually comes faster when you diagnose it early instead of waiting for more codes.
Likely causes

Common causes behind this code

  • Failed Bank 2 exhaust VVT oil-control solenoid
  • Open or high-resistance wiring in the Bank 2 exhaust actuator circuit
  • Loose, corroded, or oil-contaminated connector terminals
  • Harness damage after repair work on the Bank 2 side of the engine
  • Rare ECU driver problem once the external circuit is proven good

Cause phrases often tied to this code: bank 2 exhaust actuator open circuit, bad exhaust VVT solenoid bank 2, connector fault, wiring damage, driver issue.

Diagnostic order

Suggested workflow

  1. Capture freeze-frame and related VVT/correlation codes first.
  2. Measure solenoid resistance and verify voltage feed and driver control at the Bank 2 exhaust actuator circuit.
  3. Inspect connector fit and harness routing on the affected bank.
  4. If the circuit checks out, command the actuator and compare Bank 2 exhaust-cam response with expected movement.
  5. After repair, confirm the engine runs smoothly and Bank 2 codes stay cleared through a warm drive.
Avoid guesswork

Common mistakes

  • Confusing P0023 with P0024 and skipping the electrical test path.
  • Testing the easier bank instead of the coded bank.
  • Replacing exhaust cam sensors when the actuator circuit itself is open.
Repair path

Practical fix guidance

  • Repair wiring and connector faults first if the circuit is electrically open or unstable.
  • Replace the Bank 2 exhaust VVT solenoid if the wiring is healthy but the actuator fails testing.
  • If performance or correlation faults remain, continue into oiling and mechanical timing checks rather than calling it solved too early.
Vehicle context

Affected brands in this MVP

Brand hubs help broaden internal linking now and can evolve into make-specific diagnostic notes later.

Aliases and common searches

English phrases tied to P0023

Useful when the driver knows the wording but not the exact DTC yet.

  • bank 2 exhaust cam actuator circuit
  • VVT exhaust actuator circuit open bank 2
  • bank 2 exhaust oil control solenoid circuit
Related search intent

Queries this page can answer naturally

  • P0023 code meaning
  • what does P0023 mean
  • bank 2 exhaust actuator circuit open
  • P0023 symptoms
FAQ

Quick questions about P0023

How is P0023 different from P0024?

P0023 points first to the Bank 2 exhaust actuator circuit, while P0024 usually points to exhaust-cam timing being too advanced or performing incorrectly.

Can P0023 still affect drivability?

Yes. If the exhaust cam cannot be controlled properly, the engine can idle poorly and lose response.

Why verify the bank so carefully?

Because multi-bank engines make wrong-side diagnosis very easy and very expensive.