DTC 1-1-2 - Fault In ECM
WARNING: This page is about a different car, the 1996 Volvo 850. However, it is still accessible from the selected car via links, so may be relevant.
- If ECM detects a fault in ROM/EPROM or RAM memory circuits, circuit for ECM's temperature sensor, knock control circuit, or ECT sensor circuit, DTC 1-1-2 is set. If DTCs 4-3-2 and 5-1-3 are also present, go to testing for those DTCs. If these DTCs are not present, go to next step.
- Clear DTC. If DTC reoccurs, replace ECM. If DTC does not reoccur, fault was intermittent.