Common Chevrolet OBD Codes
Chevrolet vehicles commonly experience EVAP system faults, mass airflow sensor issues, and catalytic converter codes. The LS and LT V8 engines may trigger oil pressure and variable valve timing codes as they accumulate miles.
Most Common Chevrolet Diagnostic Codes
Catalyst System Efficiency Below Threshold
Typical cost: $200 - $2500
Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
Typical cost: $50 - $400
Evaporative Emission Control System Vent Control Circuit Malfunction
Typical cost: $75 - $500
Random/Multiple Cylinder Misfire Detected
Typical cost: $100 - $2500
System Too Lean (Bank 1)
Typical cost: $75 - $1200
Mass Airflow Sensor Circuit Range/Performance
Typical cost: $30 - $400
Evaporative Emission Control System Leak Detected (Gross Leak)
Typical cost: $15 - $500
Evaporative Emission System High Purge Flow
Typical cost: $50 - $350
Idle Control System RPM Higher Than Expected
Typical cost: $30 - $400
Catalyst System Efficiency Below Threshold (Bank 2)
Typical cost: $250 - $2500
Popular Chevrolet Models
The codes listed above are commonly reported across these Chevrolet models. Actual codes may vary by model year and engine type.
Recent Chevrolet Recalls
1 Active Recall — 2026 Chevrolet Equinox
The following NHTSA safety recalls have been issued for this vehicle. Contact your dealer to check if your vehicle is affected.
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Coupe, Corvette Convertible E-Ray, Equinox, Silverado 1500, 2500, 3500, Silverado EV, Suburban 1500, Tahoe, Traverse, GMC Acadia, Hummer EV Pickup, Hummer EV SUV, Sierra 1500, 2500, 3500, Sierra EV, Terrain, Yukon, and Yukon XL vehicles. The radio may not have been set to the correct status to download the electronic owner's manual during production. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, “Occupant Protection.”
Remedy: Dealers will reset the vehicle radio, which will facilitate automatic download of the electronic owner’s manual, free of charge. Owner notification letters are expected to be mailed April 13, 2026. Owners may contact GM customer service at 1-866-467-9700, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-333-4223. The manufacturer's number for this recall is N252540430. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 26, 2026.
Data provided by the National Highway Traffic Safety Administration (NHTSA).
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
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