P0400 P0105

Question

what to repair on this code

Answer 1

P0400 Exhaust gas recirculation (EGR) malfunction

P0105 Intake manifold absolute pressure sensor

Check the vacuum lines for the MAP sensor and the EGR , The vacuum lines tends to rot or if there the plastic line it tends to break, Either way there is no vacuum hose connection to both component. Another possible cause would be if the EGR is stuck in the open position

​ The EGR and the MAP shares the same vacuum hose connection

​ The MAP sensor is located at the front.