P258A

Vacuum Pump Control Circuit A/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine Light Is On
Deterioration of the brake booster
Unstable engine operation
Vacuum pump noise
Reduced efficiency of the exhaust gas recirculation system

Causes

Broken wiring in the control circuit
Vacuum pump relay malfunction
Circuit fuse problems
Malfunction of the vacuum pump itself
Poor contact in connectors

How to Fix

Check the integrity of the control circuit wiring
Check the condition of the relays and fuses
Diagnose the operation of the vacuum pump
Check connections and connectors
Replace faulty components

Related codes

P258B P258C P258D