P1211,P1212
Read the instructions below then start the fault diagnostic procedure.
Symptom: Idle uneven, slow or fast
| P1211 , P1212 | 
Idle air control valve (IAC), output from control module low/high, no continuity or shorting to ground/batt+.
    
    Read the instructions below then start the fault diagnostic procedure.
Symptom: Idle uneven, slow or fast
| P1211 , P1212 |