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.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Valve mechanically stalled - high stall currentCommon
- Motor wire shorted to groundPossible
Parts involved
- Engine Coolant Flow Control Valve
- Wiring Harness
- ECM
P2B58 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.