P1634high severityPowertrain
Ignition 1 Power Circuit Low Voltage
on 2014 Chevrolet Spark EV Electric Motor · FWD
What this code means
The PCM detected low voltage on the Ignition 1 power supply circuit.
Symptoms
- Check Engine Light
- Engine stalling
- Erratic gauges
- Multiple system malfunctions
Common causes
- Faulty ignition switch
- Blown Ignition 1 fuse
- Corroded connections
- Damaged wiring in ignition circuit
Diagnostic steps
- Test Ignition 1 circuit voltage at PCM
- Check Ignition 1 fuse
- Test ignition switch
- Inspect wiring and connectors
Repair notes
Check fuse and ignition switch. Repair wiring as needed.
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