P0857moderate severityPowertrain
Traction Control Input Signal Range/Performance
on 2022 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The PCM receives a traction control input signal that is out of the expected range or performance limits. This may cause traction and stability systems to behave incorrectly.
Symptoms
- Traction control warning light
- Stability control disabled
- Intermittent engine power loss
Common causes
- Faulty wheel speed or traction sensor
- CAN signal noise or interference
- Failed traction control module
- Wiring or connector fault
Diagnostic steps
- Scan PCM and ABS for codes
- Review data stream for signal range
- Inspect wiring and sensor connectors
- Replace faulty sensor or module
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Powertrain codes on this vehicle
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0026
Intake Valve Control Solenoid Circuit Range/Performance Bank 1
P0027
Exhaust Valve Control Solenoid Circuit Range/Performance Bank 1
P0028
Intake Valve Control Solenoid Circuit Range/Performance Bank 2
P0029
Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2
P0033
Turbocharger/Supercharger Bypass Valve Control Circuit