C0515moderate severityChassis
Transfer Case Encoder Ring Circuit
on 2014 Chevrolet Spark EV Electric Motor · FWD
What this code means
Malfunction in the transfer case encoder motor position feedback sensor.
Symptoms
- 4WD indicator incorrect
- Cannot verify shift completion
- Service 4WD message
- Shift hunts back and forth
Common causes
- Encoder ring sensor failure
- Encoder contaminated with metal particles
- Wiring damage
- Shift motor assembly failure
Diagnostic steps
- Read encoder position with scan tool
- Command shift and watch encoder response
- Inspect encoder wiring
- Check transfer case fluid for metal contamination
- Test encoder sensor output
Repair notes
Replace encoder motor assembly. Flush transfer case if fluid is contaminated.
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Bluetooth code reader (~$25)
Veepeak OBDCheck BLE →
Pairs with your phone — reads and clears codes, live data.
Serious DIY (~$100)
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
Shop-grade tablet (~$300+)
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic