P0202 Injector Circuit Malfunction (Cylinder 2) — Causes & Fix

What Does P0202 Mean?

P0202 indicates the ECU has detected an electrical fault in the fuel injector circuit for cylinder 2. The causes, diagnosis, and repair are identical to P0201 but affect cylinder 2 instead. On inline-four diesel engines, cylinder numbering starts at the timing belt end.

P0202 at a Glance

• What it means: The ECU has detected a fault in the fuel injector electrical circuit for cylinder 2.
• Most common cause: Faulty injector, wiring damage, or ECU driver fault.
• Severity: Moderate to serious — causes misfire on cylinder 2.
• Can you drive?: Short distances only. Prolonged driving risks DPF and catalytic converter damage.
• Typical repair cost: £100-£350 for injector replacement; £40-£100 for wiring repair.