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P2B58 Powertrain

P2B58 — Engine Coolant Flow Control Valve Motor Current High

The engine coolant flow control valve reports a motor current high condition. Coolant routing between engine and radiator branches cannot be commanded as expected.

General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.

Affected components

  • Engine coolant flow control valve
  • Wiring harness
  • Ecm

Possible causes to check

These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.

  • Valve mechanically stalled - high stall current
  • Motor wire shorted to ground

Diagnostic notes

  • The malfunction indicator lamp may illuminate

Sources

Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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