OBD Guide

P2A99

Alternative Fuel Tank Select Valve C Control Circuit/Open

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Switching to main fuel tank
  • Check Engine Light Illuminates
  • Reduced engine power
  • Problems starting the engine
  • Increased fuel consumption

Causes

  • Broken wires in the valve control circuit
  • Solenoid valve malfunction
  • Poor contact in connectors
  • Short circuit in the circuit
  • Engine control unit malfunction

How to Fix

  1. Check the integrity of the wiring harness
  2. Check valve resistance
  3. Inspect electrical connections
  4. Check circuit fuses
  5. Replace faulty valve if necessary

Related codes

Error P2A99 by Vehicle Brand