Hi My S80 has an 097 error engine service required have cleared the code twice but it just keeps coming back. I also have an 021 code next to it. Any ideas?

SOURCE: Service engine code indicates EGR valve.

You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.

steven martin

• 117 Answers
• Posted on Apr 09, 2009

SOURCE: i have engine service required message and fault code 042

P0042 : Heated oxygen sensor (HO2S)bank1, heater control -circuit malfunction.

The code is telling you one of the oxygen sensors or the wiring to it is faulty.

SOURCE: Error Code P0128 service engine light comes on intermediately

replace the thermostat.

SOURCE: 2008 Tucson with engine light on - ran service

coolant temp out of range.

SOURCE: Hi,the engine light comes on intermintly?I clear

1100-
C1100 ABS Pump Switch Circuit Failure P1100 MAF Sensor Intermittent/ Check of all OBDII Systems Not Complete P1100 FORD Mass Air Flow Sensor Intermittent P1100 HYUNDAI Map Sensor - Malfunction P1100 LEXUS BARO Sensor Circuit Malfunction P1100 TOYOTA Barometric Pressure Sensor Circuit Fault U1100 SCP (J1850) Invalid or Missing Data for Primary Id 1181-
C1181 Park Brake Valve Solenoid #1 Sense Input Circuit Short to Gound P1181 Fuel Delivery System Malfunction - High P1181 FORD Fuel Delivery System Malfunction - High P1181 HYUNDAI Fuel Pressure Monitoring U1181 SCP (J1850) Invalid or Missing Data for Personalization (Memory) Features 0004- P0004 Fuel Volume Regulator Control Circuit High P0004 Description Fuel Volume Regulator Control Circuit High is the generic definition for the P0004; however your vehicle's manufacturer may have a different definition for the P0004 code. Tech notes The P0004 is an OBDII generic code, but almost none of the vehicle manufactures use it. If you are getting this code, make sure you are using the correct OBDII code scanner for your vehicle's make and model.