I have codes 13 and 22. If anyone could tell me what they are and how to remedy this and erase the codes it would be greatly appreciated.

Paul

89 Civic

 

Trouble code 13 is an Atmoshperic pressure (BARO) sensor/defective circuit or unplugged/defective sensor.

Trouble code 22 is Vtec oil pressure switch/ defective circuit or unplugged,defective sensor.

To repair these just inspect your sensors make sure they are plugged in and check their wires. You may need to clean the contacts with some alcohol if they are dirty.
If this doesnt help then replace your sensors.