P062B ECM Fuel Injector Control Performance — Causes & Fix

What Does P062B Mean?

P062B is set by the ECU's self-monitoring of its injector control function. It often accompanies injector circuit codes: an injector or loom fault stresses the driver stage until the internal monitor flags it. Injectors and wiring must be proven healthy before any ECU repair is considered.

P062B at a Glance

• What it means: The engine control module's internal injector control monitoring has flagged a performance fault.
• Most common cause: Injector electrical values outside the ECU's control model
• Severity: Moderate to serious — rail-pressure faults cause power loss and non-starts.
• Can you drive?: Short distances in limp mode only. Diagnose promptly.
• Typical repair cost: £40-£150 for sensor/regulator work; £100-£350 per injector where back-leak is the cause.