Family lead codes
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Chevrolet OBD-II Trouble Codes
Chevrolet code overview with links to high-frequency emissions and ignition faults.
This hub belongs to the Detroit mainstream coverage route. Primary GM volume route for ignition, EVAP, throttle, and transmission complaints. Users can then pivot into sibling brands without restarting from the homepage.
Segment: GM mainstream · Priority tier: core · Family size: 2 hubs
Need the strongest page in this family first? Start with Ford, then return here for badge-specific routing.
Brand position
How this hub fits the family
Chevrolet sits in the detroit mainstream coverage cluster as a core route. Use it when owner intent is brand-specific, then pivot back to the family lead for broader code coverage.
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- This family currently resolves through core and expansion hubs.
Family context
Detroit mainstream coverage
Large domestic entry points that catch everyday Ford and Chevrolet fault lookups before users narrow into sibling makes.
Why this hub matters: Strong national search demand and broad shared systems.
Shared systems: EVAP, electronic throttle control, cooling fans, automatic transmission pressure control
Shared fault themes: reduced power complaints, hard starts and fuel smells, brake-switch and cruise faults
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Where to go next if this badge is not the whole story
- Ford · 150 mapped codes — Use as the domestic volume brand route for common powertrain and brake-switch faults
- GMC · 10 mapped codes — Truck-and-SUV GM route for reduced-engine-power and correlation faults
- Cadillac · 5 mapped codes — Luxury GM route for timing-correlation and throttle complaints
Common codes
Chevrolet trouble code pages
- P0300 — Random/Multiple Cylinder Misfire Detected
- P0305 — Cylinder 5 Misfire Detected
- P0306 — Cylinder 6 Misfire Detected
- P0307 — Cylinder 7 Misfire Detected
- P0308 — Cylinder 8 Misfire Detected
- P0171 — System Too Lean (Bank 1)
- P0420 — Catalyst System Efficiency Below Threshold (Bank 1)
- P0117 — Engine Coolant Temperature Circuit Low Input
- P0128 — Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
- P0345 — Camshaft Position Sensor A Circuit (Bank 2)
- P0346 — Camshaft Position Sensor A Circuit Range/Performance (Bank 2)
- P0347 — Camshaft Position Sensor A Circuit Low Input (Bank 2)
- P0348 — Camshaft Position Sensor A Circuit High Input (Bank 2)
- P0349 — Camshaft Position Sensor A Circuit Intermittent (Bank 2)
- P0700 — Transmission Control System Malfunction
- P0449 — Evaporative Emission Control System Vent Valve/Solenoid Circuit
- P2101 — Throttle Actuator Control Motor Circuit Range/Performance
- P0120 — Throttle/Pedal Position Sensor/Switch A Circuit
- P0223 — Throttle/Pedal Position Sensor/Switch B Circuit High Input
- P0715 — Input/Turbine Speed Sensor Circuit Malfunction
- P0730 — Incorrect Gear Ratio
- P0750 — Shift Solenoid A Malfunction
- P0755 — Shift Solenoid B Malfunction
- P0760 — Shift Solenoid C Malfunction
- P0761 — Shift Solenoid C Performance or Stuck Off
- P0762 — Shift Solenoid C Stuck On
- P0763 — Shift Solenoid C Electrical
- P0350 — Ignition Coil Primary/Secondary Circuit
- P0351 — Ignition Coil A Primary/Secondary Circuit
- P0352 — Ignition Coil B Primary/Secondary Circuit
- P0353 — Ignition Coil C Primary/Secondary Circuit
- P0354 — Ignition Coil D Primary/Secondary Circuit
- P0355 — Ignition Coil E Primary/Secondary Circuit
- P0356 — Ignition Coil F Primary/Secondary Circuit
- P0200 — Injector Circuit Malfunction
- P0201 — Injector Circuit/Open - Cylinder 1
- P0202 — Injector Circuit/Open - Cylinder 2
- P0203 — Injector Circuit/Open - Cylinder 3
- P0204 — Injector Circuit/Open - Cylinder 4
- P0205 — Injector Circuit/Open - Cylinder 5
- P0206 — Injector Circuit/Open - Cylinder 6
- P0207 — Injector Circuit/Open - Cylinder 7
- P0208 — Injector Circuit/Open - Cylinder 8
- P0087 — Fuel Rail/System Pressure Too Low
- P0089 — Fuel Pressure Regulator Performance
- P0184 — Fuel Temperature Sensor A Circuit Intermittent
- P0190 — Fuel Rail Pressure Sensor Circuit
- P0191 — Fuel Rail Pressure Sensor Range/Performance
- P0325 — Knock Sensor 1 Circuit (Bank 1 or Single Sensor)
- P0326 — Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
- P0327 — Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
- P0328 — Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
- P0330 — Knock Sensor 2 Circuit (Bank 2)
- P0331 — Knock Sensor 2 Circuit Range/Performance (Bank 2)
- P0332 — Knock Sensor 2 Circuit Low Input (Bank 2)
- P0333 — Knock Sensor 2 Circuit High Input (Bank 2)
- P0334 — Knock Sensor 2 Circuit Intermittent (Bank 2)
- P2100 — Throttle Actuator Control Motor Circuit/Open
- P2106 — Throttle Actuator Control System - Forced Limited Power
- P2107 — Throttle Actuator Control Module Processor
- P2110 — Throttle Actuator Control System - Forced Limited RPM
- P2111 — Throttle Actuator Control System - Stuck Open
- P2112 — Throttle Actuator Control System - Stuck Closed
- P0560 — System Voltage Malfunction
- P0562 — System Voltage Low
- P0563 — System Voltage High
- P0620 — Generator Control Circuit Malfunction
- P2503 — Charging System Voltage Low
- P0621 — Generator Lamp/L Terminal Circuit Malfunction
- P0622 — Generator Field/F Terminal Circuit Malfunction
- P0623 — Generator Lamp Control Circuit Malfunction
- P0624 — Generator Lamp Control Circuit Low
- P0625 — Generator Field/F Terminal Circuit Low
- P0626 — Generator Field/F Terminal Circuit High
- P2504 — Charging System Voltage High
- P0500 — Vehicle Speed Sensor A Malfunction
- P0501 — Vehicle Speed Sensor A Range/Performance
- P0503 — Vehicle Speed Sensor A Intermittent/Erratic/High
- P0520 — Engine Oil Pressure Sensor/Switch Circuit
- P0521 — Engine Oil Pressure Sensor/Switch Range/Performance
- P0522 — Engine Oil Pressure Sensor/Switch Low Voltage
- P0523 — Engine Oil Pressure Sensor/Switch High Voltage
- P0524 — Engine Oil Pressure Too Low
- P0365 — Camshaft Position Sensor B Circuit (Bank 1)
- P0366 — Camshaft Position Sensor B Circuit Range/Performance (Bank 1)
- P0367 — Camshaft Position Sensor B Circuit Low Input (Bank 1)
- P0368 — Camshaft Position Sensor B Circuit High Input (Bank 1)
- P0369 — Camshaft Position Sensor B Circuit Intermittent (Bank 1)
- P0390 — Camshaft Position Sensor B Circuit (Bank 2)
- P0391 — Camshaft Position Sensor B Circuit Range/Performance (Bank 2)
- P0392 — Camshaft Position Sensor B Circuit Low Input (Bank 2)
- P0393 — Camshaft Position Sensor B Circuit High Input (Bank 2)
- P0394 — Camshaft Position Sensor B Circuit Intermittent (Bank 2)
- P0480 — Cooling Fan 1 Control Circuit Malfunction
- P0481 — Cooling Fan 2 Control Circuit Malfunction
- P0482 — Cooling Fan 3 Control Circuit Malfunction
- P0483 — Cooling Fan Rationality Check Malfunction
- P0484 — Cooling Fan Circuit Over Current
- P0485 — Cooling Fan Power/Ground Circuit Malfunction
- P219A — Bank 1 Air/Fuel Ratio Imbalance
- P219B — Bank 2 Air/Fuel Ratio Imbalance
- P0380 — Glow Plug/Heater Circuit A Malfunction
- P0670 — Glow Plug Control Module Control Circuit
- P0671 — Cylinder 1 Glow Plug Circuit/Open
- P0672 — Cylinder 2 Glow Plug Circuit/Open
- P0673 — Cylinder 3 Glow Plug Circuit/Open
- P0674 — Cylinder 4 Glow Plug Circuit/Open
- P0675 — Cylinder 5 Glow Plug Circuit/Open
- P0676 — Cylinder 6 Glow Plug Circuit/Open
- P2505 — ECM/PCM Power Input Signal
- P2506 — ECM/PCM Power Input Signal Range/Performance
- P2507 — ECM/PCM Power Input Signal Low
- P2508 — ECM/PCM Power Input Signal High
- P2509 — ECM/PCM Power Input Signal Intermittent
- P2510 — ECM/PCM Power Relay Sense Circuit Range/Performance
- P0615 — Starter Relay Circuit
- P0616 — Starter Relay Circuit Low
- P0617 — Starter Relay Circuit High
- P0512 — Starter Request Circuit
- P2534 — Ignition Switch Run/Start Position Circuit Low
- P2535 — Ignition Switch Run/Start Position Circuit High
- P2536 — Ignition Switch Accessory Position Circuit Low
- P2537 — Ignition Switch Accessory Position Circuit High
- P0513 — Incorrect Immobilizer Key
- P0605 — Internal Control Module ROM Error
- P0607 — Control Module Performance
- P0841 — Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
- P0846 — Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
- P0868 — Transmission Fluid Pressure Low
- P0068 — MAP/MAF - Throttle Position Correlation
- P0633 — Immobilizer Key Not Programmed - ECM/PCM
- P0780 — Shift Malfunction
- P0316 — Engine Misfire Detected on Startup (First 1000 Revolutions)
- P2181 — Cooling System Performance
- P2227 — Barometric Pressure Circuit Range/Performance
- P2279 — Intake Air System Leak
- P2287 — Injector Control Pressure Sensor Circuit Intermittent
- P0309 — Cylinder 9 Misfire Detected
- P0310 — Cylinder 10 Misfire Detected
- P0556 — Brake Booster Pressure Sensor Circuit Range/Performance
- P0557 — Brake Booster Pressure Sensor Circuit Low
- P2177 — System Too Lean Off Idle Bank 1
- P2179 — System Too Lean Off Idle Bank 2
- P0504 — Brake Switch A/B Correlation
- P0571 — Brake Switch A Circuit
- P0572 — Brake Switch A Circuit Low
- P0573 — Brake Switch A Circuit High
- P1128 — Closed Loop Fueling Not Achieved Bank 1
- P1129 — Closed Loop Fueling Not Achieved Bank 2
- P1174 — Fuel Trim Cylinder Balance Bank 1
- P1682 — Ignition 1 Switch Circuit 2
- P0069 — Manifold Absolute Pressure - Barometric Pressure Correlation
- P0490 — Exhaust Gas Recirculation Control Circuit High
- P0508 — Idle Air Control System Circuit Low
- P0509 — Idle Air Control System Circuit High
- P0558 — Brake Booster Pressure Sensor Circuit High
- P0559 — Brake Booster Pressure Sensor Circuit Intermittent
Symptoms
Frequent symptom paths
Connected paths
Cross-brand diagnostic pivots
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Ford · Use as the domestic volume brand route for common powertrain and brake-switch faultsGMC · Truck-and-SUV GM route for reduced-engine-power and correlation faultsCadillac · Luxury GM route for timing-correlation and throttle complaintsBuick · Support route for GM reduced-power searches under Buick intent
Connected paths
Brand-relevant guides
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How to Diagnose an Engine Misfire Step by StepHow to Read Live Fuel Trim Data Without GuessingHow to Test an EVAP Purge Valve Without GuessingEVAP Small Leak Checklist Before Replacing PartsGas Cap vs EVAP Leak: How to Tell What Is Actually WrongFuel Tank Pressure Sensor vs EVAP Leak: How to Tell the DifferenceCan You Drive With a Flashing Check Engine Light?Vacuum Leak Checklist for Lean Codes and Rough IdleHard Start Diagnostic Order for OBD-II VehiclesReduced Power Initial ChecklistLong Crank Diagnostic Order Before Replacing SensorsNo Start But Cranks Checklist for OBD-II VehiclesRefuel-Related Hard Start Checklist: Purge, Vent, and Pressure CluesPurge Valve Stuck Open vs Flooded Charcoal Canister: How to Tell Which One Is Causing the Refuel ProblemWhy Topping Off the Gas Tank Damages the EVAP SystemBad Gas vs EVAP Purge Problem: How to Tell Which One You Actually HaveEVAP Vent Valve vs Purge Valve: How to Tell Which Side of EVAP Is FailingP0420 vs Bad O2 Sensor vs Exhaust Leak: How to Tell Which One Is Actually Setting the StoryRear O2 Sensor Code vs Bad Catalytic Converter: How to Tell Which One Is Actually WrongP0300 Then P0420: What It Usually MeansRefuel Misfire vs Ignition Misfire: How to Tell Which One You Actually HaveExhaust Leak vs Bad O2 Sensor vs True Lean Condition: How to Tell Which Story the Engine Is Actually TellingP0016 vs P0335 vs P0340: How to Tell Timing Correlation from Crank or Cam Signal FailureStartup Rattle with P0016 or P0017: What It Usually MeansP0011 vs P0016 vs P0340: VVT Solenoid, Sensor, or Timing Chain?Long Crank Hot vs Cold: What Cam, Crank, and EVAP Codes Are Trying to Tell YouPost-Catalyst Fuel Trim Codes vs Rear O2 Sensor vs Catalytic Converter: How to Tell Which One Is Actually WrongTorque Converter Won’t Lock: High Highway RPM vs Real SlipP0700 vs P0715 vs P0730: How to Split Bad Transmission Data from Real SlipBattery Light On: Bad Battery, Alternator, or Wiring?P219A / P219B vs P0300 vs P0171 / P0174: Bank Imbalance or General Lean-Misfire Problem?Fuel Rail Pressure Sensor vs Regulator Control: How to Tell Which Side of the Fuel System Is Actually FailingEVAP Leak Detection Pump vs Vent Valve vs Switching Valve: How to Tell Which EVAP Hardware Is Actually FailingFailed Emissions Test: Active Code vs Monitor Not ReadyPCM Power Relay vs Battery vs Ignition Switch: How to Split a No-Start Power ProblemSecurity Light On: Wrong Key vs Immobilizer Module vs Power ProblemEngine Overheats in Traffic vs on the Highway: What That Usually MeansReduced Engine Power: Throttle Body vs Pedal vs Low VoltageBrake Switch vs Brake Light Circuit: How to Tell What Is Actually WrongCruise Control Won't Engage: Brake Switch vs Clutch Switch vs Speed SignalHard Brake Pedal: Brake Booster vs Vacuum Leak vs Pressure SensorEngine Runs Too Cool: Thermostat vs Sensor vs WiringP0125 vs P0128 vs P0118: Open Loop Too Long vs Thermostat vs False-Cold ECTP2761 vs P0743 vs P0741: Open Circuit vs Electrical Fault vs TCC PerformanceHigh Highway RPM in Top Gear: No Lockup vs No Overdrive
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