OBD Guide

P2BB3

Fuel Pump Secondary Circuit Performance

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–167 (est.)

Symptoms

  • Difficulty starting the engine
  • Loss of power during acceleration
  • Engine stalls at idle
  • Jerks when moving
  • Increased fuel consumption

Causes

  • Fuel pump malfunction
  • Problems with wiring or contacts
  • Fuel pump relay failure
  • Engine control module (ECM) malfunction
  • Short circuit in the circuit

How to Fix

  1. Check the voltage in the fuel pump circuit
  2. Inspect and, if necessary, replace the pump relay
  3. Check the integrity of wiring and connections
  4. Diagnose the operation of the fuel pump
  5. Replace fuel pump or ECM if necessary

Related codes

Error P2BB3 by Vehicle Brand