P1630high severityPowertrain
ECM Malfunction
on 2012 Toyota Matrix 2.4L I4 · FWD
What this code means
A general ECM internal malfunction has been detected during self-testing.
Symptoms
- CEL
- Various drivability issues
- Poor running
- No start possible
Common causes
- Internal ECM failure
- Power supply issues
- Poor grounds
- Water intrusion
Diagnostic steps
- Check ECM power supply
- Test ground connections
- Inspect for water damage
- Test ECM outputs
Repair notes
Replace ECM.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control