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 Diagnosis (6 Of 6)
- DTC Index
- DTC P2195-00: O2 Sensor Signal Stuck Lean (Bank 1 Sensor 1)
- DTC P2196-00: O2 Sensor Signal Stuck Rich (Bank 1 Sensor 1)
- DTC P21CF-00: Cylinder 1 Injector 'B' Circuit/Open
- DTC P21D0-00: Cylinder 2 Injector 'B' Circuit/Open
- DTC P21D1-00: Cylinder 3 Injector 'B' Circuit/Open
- DTC P21D2-00: Cylinder 4 Injector 'B' Circuit/Open
- DTC P21DB-00: Cylinder 1 Injector 'B' Circuit Low
- DTC P21DC-00: Cylinder 1 Injector 'B' Circuit High
- DTC P21DE-00: Cylinder 2 Injector 'B' Circuit Low
- DTC P21DF-00: Cylinder 2 Injector 'B' Circuit High
- DTC P21E0-00: Cylinder 3 Injector 'B' Circuit Low
- DTC P21E1-00: Cylinder 3 Injector 'B' Circuit High
- DTC P21E2-00: Cylinder 4 Injector 'B' Circuit Low
- DTC P21E3-00: Cylinder 4 Injector 'B' Circuit High
- DTC P2227-00: Barometric Pressure Circuit Range/Performance
- DTC P2228-00: Barometric Pressure Circuit Low Input
- DTC P2229-00: Barometric Pressure Circuit High Input
- DTC P2237-00: O2 Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1)
- DTC P2243-00: O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 1)
- DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1)
- DTC P2270-00: O2 Sensor Stuck Lean - Bank 1 Sensor 2
- DTC P2271-00: O2 Sensor Stuck Rich - Bank 1 Sensor 2
- DTC P2280-00: Air Flow Restriction/Air Leak Between Air Filter and MAF Bank 1
- DTC P2422-00: Evaporative Emission System Vent Valve Stuck Closed
- DTC P25B0-00: Fuel Level Sensor 'A' Stuck
- DTC P2626-00: O2 Sensor Pumping Current Trim Circuit/Open - Bank 1 Sensor 1
- DTC P2B58-00: Engine Coolant Flow Control Valve Motor Current High
- DTC P2B59-00: Engine Coolant Flow Control Valve Control Circuit/Open
- DTC P2B5D-00: Engine Coolant Flow Control Valve Position Sensor Circuit
- DTC P2B60-00: Engine Coolant Flow Control Valve Position Sensor Circuit Range/Performance
- DTC U0001-00: High Speed CAN Communication Bus off (C-CAN)
- DTC U0101-00: Lost Communication with TCM (C-CAN)
- DTC U012D-00: Lost Communication With Generator Control Module
- DTC U04B1-00: Invalid Data Received From Battery Monitor Module
- DTC U060F-00: Lost Communication With Mass or Volume Air Flow Sensor 'A'
- DTC 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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