Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Kia Rio LXFACTORY OEM SERVICE PROCEDURE
Engine Control System DTCS
ENGINE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| P000A-00 | 'A' Camshaft Position Slow Response Bank 1 |
| P000B-00 | 'B' Camshaft Position Slow Response Bank 1 |
| P0011-00 | 'A (Intake)' Camshaft Position - Timing Over-Advanced Or System Performance (Bank 1) |
| P0014-00 | 'B (Exhaust)' Camshaft Position - Timing Over-Advanced Or System Performance (Bank 1) |
| P0016-00 | Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A (Intake)) |
| P0017-00 | Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B (Exhaust)) |
| P0030-00 | HO2S Heater Control Circuit (Bank 1/Sensor 1) |
| P0031-00 | HO2S Heater Control Circuit Low (Bank 1/Sensor 1) |
| P0032-00 | HO2S Heater Control Circuit High (Bank 1/Sensor 1) |
| P0036-00 | HO2S Heater Control Circuit (Bank 1/Sensor 2) |
| P0037-00 | HO2S Heater Control Circuit Low (Bank 1/Sensor 2) |
| P0038-00 | HO2S Heater Control Circuit High (Bank 1/Sensor 2) |
| P0068-00 | MAP (MAF) - Throttle Position Sensor Correlation |
| P0071-00 | Ambient Air Temperature Circuit Range/Performance |
| P0075-00 | Intake Valve Control Solenoid Circuit (Bank 1) |
| P0076-00 | Intake Valve Control Solenoid Circuit-Low (Bank 1) |
| P0077-00 | Intake Valve Control Solenoid Circuit-High (Bank 1) |
| P0078-00 | Exhaust Valve Control Solenoid Circuit (Bank 1) |
| P0079-00 | Exhaust Valve Control Solenoid Circuit Low (Bank 1) |
| P0080-00 | Exhaust Valve Control Solenoid Circuit High (Bank 1) |
| P00B7-00 | Engine Coolant Flow Low/Performance |
| P00BC-00 | Mass Or Volume Air Flow 'A' Circuit Range/Performance - Air Flow Too Low |
| P00BD-00 | Mass Or Volume Air Flow 'A' Circuit Range/Performance - Air Flow Too High |
| P00CE-00 | Intake Air Temperature Measurement System - Multiple Sensor Correlation Bank 1 |
| P00D1-00 | HO2S Heater Control Circuit Range/Performance Bank 1 Sensor 1 |
| P00D2-00 | HO2S Heater Control Circuit Range/Performance Bank 1 Sensor 2 |
| P0100-00 | Mass or Volume Air Flow Circuit |
| P0101-00 | Mass or Volume Air Flow Circuit Range/Performance |
| P0106-00 | Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance |
| P0107-00 | Manifold Absolute Pressure/Barometric Pressure Circuit Low Input |
| P0108-00 | Manifold Absolute Pressure/Barometric Pressure Circuit High Input |
| P0111-00 | Intake Air Temperature Sensor 1 Circuit Range/Performance |
| P0112-00 | Intake Air Temperature Sensor 1 Circuit Low Input |
| P0113-00 | Intake Air Temperature Sensor 1 Circuit High Input |
| P0114-00 | Intake Air Temperature Sensor 1 Circuit Intermittent |
| P0116-00 | Engine Coolant Temperature Circuit Range/Performance |
| P0117-00 | Engine Coolant Temperature Circuit Low Input |
| P0118-00 | Engine Coolant Temperature Circuit High Input |
| P0119-00 | Engine Coolant Temperature Circuit Intermittent |
| P011B-00 | Engine Coolant Temperature/Intake Air Temperature Correlation |
| P0121-00 | Throttle Position Sensor 1 Signal Circuit Range/Performance |
| P0122-00 | Throttle Position Sensor 1 Signal Circuit Low Input |
| P0123-00 | Throttle Position Sensor 1 Signal Circuit High Input |
| P0127-00 | Intake Air Temperature Too High |
| P0130-00 | O2 Sensor Circuit (Bank 1/Sensor 1) |
| P0131-00 | O2 Sensor Circuit Low Voltage (Bank 1/Sensor 1) |
| P0132-00 | O2 Sensor Circuit High Voltage (Bank 1/Sensor 1) |
| P0133-00 | O2 Sensor Circuit Slow Response (Bank 1/Sensor 1) |
| P0134-00 | O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) |
| P0135-00 | O2 Sensor Heater Circuit (Bank 1/Sensor 1) |
| P0136-00 | O2 Sensor Circuit (Bank 1/Sensor 2) |
| P0137-00 | O2 Sensor Circuit Low Voltage (Bank 1/Sensor 2) |
| P0138-00 | O2 Sensor Circuit High Voltage (Bank 1/Sensor 2) |
| P013A-00 | O2 Sensor Slow Response - Rich To Lean Bank 1 Sensor 2 |
| P013B-00 | O2 Sensor Slow Response - Lean To Rich Bank 1 Sensor 2 |
| P0171-00 | System Too Lean (Bank 1) |
| P0172-00 | System Too Rich (Bank 1) |
| P0201-00 | Injector Circuit/Open-Cylinder 1 |
| P0202-00 | Injector Circuit/Open-Cylinder 2 |
| P0203-00 | Injector Circuit/Open-Cylinder 3 |
| P0204-00 | Injector Circuit/Open-Cylinder 4 |
| P0221-00 | Throttle Position Sensor 2 Signal Circuit Range/Performance |
| P0222-00 | Throttle Position Sensor 2 Signal Circuit Low Input |
| P0223-00 | Throttle Position Sensor 2 Signal Circuit High Input |
| P0230-00 | Fuel Pump Primary Circuit |
| P0261-00 | Cylinder 1 Injector Circuit Low |
| P0262-00 | Cylinder 1 Injector Circuit High |
| P0264-00 | Cylinder 2 Injector Circuit Low |
| P0265-00 | Cylinder 2 Injector Circuit High |
| P0267-00 | Cylinder 3 Injector Circuit Low |
| P0268-00 | Cylinder 3 Injector Circuit High |
| P0270-00 | Cylinder 4 Injector Circuit Low |
| P0271-00 | Cylinder 4 Injector Circuit High |
| P0300-00 | Random Multiple Cylinder Misfire Detected |
| P0301-00 | Cylinder 1-Misfire detected |
| P0302-00 | Cylinder 2-Misfire detected |
| P0303-00 | Cylinder 3-Misfire detected |
| P0304-00 | Cylinder 4-Misfire detected |
| P0326-00 | Knock Sensor 1 Circuit Range/Performance (Bank 1) |
| P0335-00 | Crankshaft Position Sensor 'A' Circuit |
| P0336-00 | Crankshaft Position Sensor 'A' Circuit Range/Performance |
| P0341-00 | Camshaft Position Sensor 'A' (Intake) Circuit Range/Performance (Bank 1) |
| P0342-00 | Camshaft Position Sensor 'A' (Intake) Circuit Low Input |
| P0343-00 | Camshaft Position Sensor 'A' (Intake) Circuit High Input |
| P0366-00 | Camshaft Position Sensor 'B' (Exhaust) Circuit Range/Performance (Bank 1) |
| P0367-00 | Camshaft Position Sensor 'B' (Exhaust) Circuit Low |
| P0368-00 | Camshaft Position Sensor 'B' (Exhaust) Circuit High |
| P0401-00 | Exhaust Gas Recirculation Flow Insufficient Detected |
| P0403-00 | Exhaust Gas Recirculation Control Circuit |
| P0404-00 | Exhaust Gas Recirculation Control Circuit Range/Performance |
| P0405-00 | Exhaust Gas Recirculation Sensor A Circuit Low |
| P0406-00 | Exhaust Gas Recirculation Sensor A Circuit High |
| P0420-00 | Catalyst System Efficiency Below Threshold (Bank 1) |
| P042E-00 | Exhaust Gas Recirculation 'A' Control Stuck Open |
| P042F-00 | Exhaust Gas Recirculation 'A' Control Stuck Closed |
| P0442-00 | Evaporative Emission System-Leak detected (small leak) |
| P0444-00 | Evaporative Emission System-Purge Control Valve Circuit Open |
| P0449-00 | Evaporative Emission System - Vent Valve/Solenoid Circuit |
| P0451-00 | Evaporative Emission System-Pressure Sensor Range/Performance |
| P0452-00 | Evaporative Emission System-Pressure Sensor Low Input |
| P0453-00 | Evaporative Emission System-Pressure Sensor High Input |
| P0455-00 | Evaporative Emission System-Leak detected (Large leak) |
| P0456-00 | Evaporative Emission System-Leak detected (very small leak) |
| P0458-00 | Evaporative Emission System Purge Control Valve Circuit Low |
| P0459-00 | Evaporative Emission System Purge Control Valve Circuit High |
| P0462-00 | Fuel Level Sensor 'A' Circuit Low Input |
| P0463-00 | Fuel Level Sensor 'A' Circuit High Input |
| P0489-00 | Exhaust Gas Recirculation Control Circuit Low |
| P0490-00 | Exhaust Gas Recirculation Control Circuit High |
| P0498-00 | Evaporative Emission System Vent Valve Control Circuit Low |
| P0499-00 | Evaporative Emission System Vent Valve Control Circuit High |
| P049D-00 | EGR 'A' Control Position Exceeded Learning Limit |
| P04DF-00 | EVAP System Purge Control Valve 'A' Performance/Stuck Open |
| P04E0-00 | EVAP System Purge Control Valve 'A' Stuck Closed |
| P0504-00 | Brake Switch 'A'/'B' Correlation |
| P0506-00 | Idle Air Control System- RPM Lower than Expected |
| P0507-00 | Idle Air Control System- RPM Higher than Expected |
| P050A-00 | Cold Start Idle Air Control System Performance |
| P050B-00 | Cold Start Ignition Timing Performance |
| P0532-00 | A/C Refrigerant Pressure Sensor 'A' Circuit Low Input |
| P0533-00 | A/C Refrigerant Pressure Sensor 'A' Circuit High Input |
| P0562-00 | System Voltage Low |
| P0563-00 | System Voltage High |
| P05CC-00 | Cold Start 'A' Camshaft Position Timing Performance Bank 1 |
| P05CE-00 | Cold Start 'A' Camshaft Position Timing Performance Bank 2 |
| P0605-00 | Internal Control Module Read Only Memory (ROM) Error |
| P0606-00 | ECM/PCM Processor |
| P061A-00 | Internal Control Module Torque Performance |
| P0620-00 | Alternator Control Circuit |
| P0630-00 | VIN Not Programmed or Incompatible-ECM/PCM |
| P0638-00 | Throttle Actuator Control Range/Performance |
| P0642-00 | Sensor Reference Voltage 'A' Circuit Low |
| P0643-00 | Sensor Reference Voltage 'A' Circuit High |
| P064D-00 | Internal Control Module O2 Sensor Processor Performance Bank 1 |
| P0652-00 | Sensor Reference Voltage "B" Circuit Low |
| P0653-00 | Sensor Reference Voltage 'B' Circuit High |
| P0698-00 | Sensor Reference Voltage "C" Circuit Low |
| P0699-00 | Sensor Reference Voltage 'C' Circuit High |
| P06B6-00 | PCM Internal Error |
| P2096-00 | Post Catalyst Fuel Trim System too Lean (Bank 1) |
| P2097-00 | Post Catalyst Fuel Trim System too Rich (Bank 1) |
| P2101-00 | Throttle Actuator Control Motor Circuit Range/Performance |
| P2118-00 | Throttle Actuator Control Motor Current Range/Performance |
| P2122-00 | Accelerator Position Sensor 1 Signal Circuit Low Input |
| P2123-00 | Accelerator Position Sensor 1 Signal Circuit High Input |
| P2127-00 | Accelerator Position Sensor 2 Signal Circuit Low Input |
| P2128-00 | Accelerator Position Sensor 2 Signal Circuit High Input |
| P2138-00 | Accelerator Position Sensor 1 & 2 Signal Voltage Correlation |
| P2147-00 | Fuel Injector Group 'A' Supply Voltage Circuit Low |
| P2148-00 | Fuel Injector Group 'A' Supply Voltage Circuit High |
| P2150-00 | Fuel Injector Group 'B' Supply Voltage Circuit Low |
| P2151-00 | Fuel Injector Group 'B' Supply Voltage Circuit High |
| P2173-00 | Throttle Actuator Control System- High Air Flow Detected |
| P2175-00 | Throttle Actuator Control System - Low Airflow Detected |
| P2183-00 | Engine Coolant Temperature Sensor 2 Circuit Range/Performance |
| P2184-00 | Engine Coolant Temperature Sensor 2 Circuit Low |
| P2185-00 | Engine Coolant Temperature Sensor 2 Circuit High |
| P2186-00 | Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic |
| P2195-00 | O2 Sensor Signal Stuck Lean (Bank 1 Sensor 1) |
| P2196-00 | O2 Sensor Signal Stuck Rich (Bank 1 Sensor 1) |
| P21CF-00 | Cylinder 1 Injector 'B' Circuit/Open |
| P21D0-00 | Cylinder 2 Injector 'B' Circuit/Open |
| P21D1-00 | Cylinder 3 Injector 'B' Circuit/Open |
| P21D2-00 | Cylinder 4 Injector 'B' Circuit/Open |
| P21DB-00 | Cylinder 1 Injector 'B' Circuit Low |
| P21DC-00 | Cylinder 1 Injector 'B' Circuit High |
| P21DE-00 | Cylinder 2 Injector 'B' Circuit Low |
| P21DF-00 | Cylinder 2 Injector 'B' Circuit High |
| P21E0-00 | Cylinder 3 Injector 'B' Circuit Low |
| P21E1-00 | Cylinder 3 Injector 'B' Circuit High |
| P21E2-00 | Cylinder 4 Injector 'B' Circuit Low |
| P21E3-00 | Cylinder 4 Injector 'B' Circuit High |
| P2227-00 | Barometric Pressure Circuit Range/Performance |
| P2228-00 | Barometric Pressure Circuit Low Input |
| P2229-00 | Barometric Pressure Circuit High Input |
| P2237-00 | O2 Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1) |
| P2243-00 | O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1) |
| P2251-00 | O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) |
| P2270-00 | O2 Sensor Stuck Lean - Bank 1 Sensor 2 |
| P2271-00 | O2 Sensor Stuck Rich - Bank 1 Sensor 2 |
| P2280-00 | Air Flow Restriction/Air Leak Between Air Filter and MAF Bank 1 |
| P2422-00 | Evaporative Emission System Vent Valve Stuck Closed |
| P25B0-00 | Fuel Level Sensor 'A' Stuck |
| P2626-00 | O2 Sensor Pumping Current Trim Circuit/Open - Bank 1 Sensor 1 |
| P2B58-00 | Engine Coolant Flow Control Valve Motor Current High |
| P2B59-00 | Engine Coolant Flow Control Valve Control Circuit/Open |
| P2B5D-00 | Engine Coolant Flow Control Valve Position Sensor Circuit |
| P2B60-00 | Engine Coolant Flow Control Valve Position Sensor Circuit Range/Performance |
| U0001-00 | High Speed CAN Communication Bus off (C-CAN) |
| U0101-00 | Lost Communication with TCM (C-CAN) |
| U012D-00 | Lost Communication With Generator Control Module |
| U04B1-00 | Invalid Data Received From Battery Monitor Module |
| U060F-00 | Lost Communication With Mass or Volume Air Flow Sensor 'A' |
| U063F-00 | Lost Communication With Engine Coolant Flow Control Valve Position Sensor |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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