IAT (intake air temp) sensor 1 circuit low input.
Trouble code P0326 means:Knock sensor no.1 circuit,range or performance problem (bank 1 or single sensor)
On a 4 cylinder it is a slow response from oxygen sensor #2. It can be a bad electrical connection or you need a new sensor.
System to lean bank 1. Can be dirty MAF sensor or vacuum leak.
This code is on 2004 Chevrolet silverado po. 432 what does it mean or affects on this truck?
TPS sensor, low input (throttle position)
Google '97 escort P0112' and take your choice.
When is sends a code to the ECM that it is malfunctioning. Usually a PO 325 but the codes are slightly different depending on the model and year. You can get a complete Subaru PO listing if you Google it. If there is no code, your knock sensor is fine.
o2 sensor slow to respond bank 2 sensor 1
Injector pressure sensor system performance problem.
Trouble code P0101 means: MAF Sensor Signal Range/Performance
P0130 = O2 sensor circuit malfunction (bank 1 sensor 1) P0150 = O2 sensor circuit malfunction (bank 2 sensor 1)
Trouble code P0155 means: O2 Heater Circuit (Bank 2, Sensor 1)