2021 Honda Clarity Plug-In HybridFACTORY OEM SERVICE PROCEDURE

2018 2019 2020

DTC Detection Item Troubleshooting Advanced Diagnostics Note
P0010 Variable Valve Timing Control (VTC) Malfunction TRS AD  
P0011 Variable Valve Timing Control (VTC) System Malfunction TRS AD  
P0069 Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem TRS AD  
P006A Mass Air Flow (MAF) Sensor Circuit Range/Performance Problem TRS AD  
P0070 Outside Air Temperature Sensor A/B Correlation TRS AD  
P0071 Outside Air Temperature Sensor A Out of Range TRS AD  
P0072 Outside Air Temperature Sensor A Circuit Low TRS AD  
P0073 Outside Air Temperature Sensor A Circuit High TRS AD  
P0096 Intake Air Temperature (IAT) Sensor 2 Circuit Range/Performance Problem TRS AD  
P0097 Intake Air Temperature (IAT) Sensor 2 Circuit Low Voltage TRS AD  
P0098 Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage TRS AD  
P00DA Outside Air Temperature Sensor B Out of Range TRS AD  
P00DB Outside Air Temperature Sensor B Circuit Low TRS AD  
P00DC Outside Air Temperature Sensor B Circuit High TRS AD  
P00FE Evaporative Emission (EVAP) Vent Line Blockage TRS AD  
P0101 Mass Air Flow (MAF) Sensor Circuit Range/Performance Problem (Out of Range) TRS AD  
P0102 Mass Air Flow (MAF) Sensor Circuit Low Voltage TRS AD  
P0103 Mass Air Flow (MAF) Sensor Circuit High Voltage TRS AD  
P0105 Manifold Absolute Pressure (MAP) Sensor Out of Range TRS AD  
P0106 Manifold Absolute Pressure (MAP) Sensor Range/Performance Problem TRS AD  
P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage TRS AD  
P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage TRS AD  
P0111 Intake Air Temperature (IAT) Sensor 1 Circuit Range/Performance Problem TRS AD  
P0112 Intake Air Temperature (IAT) Sensor 1 Circuit Low Voltage TRS AD  
P0113 Intake Air Temperature (IAT) Sensor 1 Circuit High Voltage TRS AD  
P0115 Engine Coolant Temperature (ECT) Sensor 1 Out of Range TRS AD  
P0116 Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/Performance Problem TRS AD  
P0117 Engine Coolant Temperature (ECT) Sensor 1 Circuit Low Voltage TRS AD  
P0118 Engine Coolant Temperature (ECT) Sensor 1 Circuit High Voltage TRS AD  
P011A Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/Performance Problem TRS AD  
P011B Intake Air Temperature (IAT) Sensor 1 Circuit Range/Performance Problem TRS AD  
P0121 Throttle Position (TP) Sensor A Out of Range TRS AD  
P0122 Throttle Position (TP) Sensor A Circuit Low Voltage TRS AD  
P0123 Throttle Position (TP) Sensor A Circuit High Voltage TRS AD  
P0125 Engine Coolant Temperature (ECT) Sensor 1 Malfunction/Slow Response TRS AD  
P0128 Cooling System Malfunction TRS AD  
P0130 Air Fuel Ratio (A/F) Sensor (Sensor 1) Out of Range TRS AD  
P0133 Air Fuel Ratio (A/F) Sensor (Sensor 1) Malfunction/Slow Response TRS AD  
P0134 Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction TRS AD  

NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.

DTC Detection Item Troubleshooting Advanced Diagnostics Note
P0135 Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater Circuit Malfunction TRS AD  
P0137 Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Low Voltage TRS AD  
P0138 Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit High Voltage TRS AD  
P0139 Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Slow Response TRS AD  
P0141 Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Heater Circuit Malfunction TRS AD  
P0171 Fuel System Too Lean TRS AD  
P0172 Fuel System Too Rich TRS AD  
P0201 No. 1 Cylinder Injector Circuit Malfunction TRS AD  
P0202 No. 2 Cylinder Injector Circuit Malfunction TRS AD  
P0203 No. 3 Cylinder Injector Circuit Malfunction TRS AD  
P0204 No. 4 Cylinder Injector Circuit Malfunction TRS AD  
P0221 Throttle Position (TP) Sensor B Out of Range TRS AD  
P0222 Throttle Position (TP) Sensor B Circuit Low Voltage TRS AD  
P0223 Throttle Position (TP) Sensor B Circuit High Voltage TRS AD  
P0300 Random Misfire Detected TRS AD  
P0301 No. 1 Cylinder Misfire Detected TRS AD  
P0302 No. 2 Cylinder Misfire Detected TRS AD  
P0303 No. 3 Cylinder Misfire Detected TRS AD  
P0304 No. 4 Cylinder Misfire Detected TRS AD  
P0326 Knock Sensor Malfunction TRS AD  
P0327 Knock Sensor Circuit Low Voltage TRS AD  
P0328 Knock Sensor Circuit High Voltage TRS AD  
P0335 Crankshaft Position (CKP) Sensor No Signal TRS AD  
P0339 Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption TRS AD  
P0340 Camshaft Position (CMP) Sensor A No Signal TRS AD  
P0341 Camshaft Position (CMP) Sensor A and Crankshaft Position (CKP) Sensor Incorrect Phase Detected TRS AD  
P0344 Camshaft Position (CMP) Sensor A Circuit Intermittent Interruption TRS AD  
P0351 No. 1 Cylinder Ignition Coil Circuit Malfunction TRS AD  
P0352 No. 2 Cylinder Ignition Coil Circuit Malfunction TRS AD  
P0353 No. 3 Cylinder Ignition Coil Circuit Malfunction TRS AD  
P0354 No. 4 Cylinder Ignition Coil Circuit Malfunction TRS AD  
P0365 Camshaft Position (CMP) Sensor B Circuit No Signal TRS AD  
P0369 Camshaft Position (CMP) Sensor B Circuit Intermittent Interruption TRS AD  
P0400 Exhaust Gas Recirculation (EGR) System Leak Detected TRS AD  
P0401 Exhaust Gas Recirculation (EGR) Insufficient Flow TRS AD  
P0404 Exhaust Gas Recirculation (EGR) Valve Circuit Range/Performance Problem TRS AD  
P0405 Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit Low Voltage TRS AD  
P0406 Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage TRS AD  
P0420 Catalyst System Efficiency Below Threshold TRS AD  
P043E Evaporative Emission (EVAP) Leak Check Module Standard Pressure Low TRS AD  

NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.

DTC Detection Item Troubleshooting Advanced Diagnostics Note
P043F Evaporative Emission (EVAP) Leak Check Module Standard Pressure High TRS AD  
P0443 Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction TRS AD  
P0450 Fuel Tank Pressure (FTP) Sensor Out of Range TRS AD  
P0451 Evaporative Emission (EVAP) Leak Check Module Pressure Sensor Range/Performance TRS AD  
P0452 Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage TRS AD  
P0453 Fuel Tank Pressure (FTP) Sensor Circuit High Voltage TRS AD  
P0460 Fuel Level Sensor (Fuel Gauge Sending Unit) Out of Range TRS AD  
P0461 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Range/Performance Problem TRS AD  
P0462 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage TRS AD  
P0463 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage TRS AD  
P046C Exhaust Gas Recirculation (EGR) Valve Position Sensor Out of Range TRS AD  
P0497 Evaporative Emission (EVAP) System Low Purge Flow Detected TRS AD  
P049D Exhaust Gas Recirculation (EGR) Control Position Exceeded Learning Limit TRS AD  
P04C1 Fuel Fill Door Open Relay Control Circuit Low Voltage TRS AD  
P04C2 Fuel Fill Door Open Relay Control Circuit High Voltage TRS AD  
P04C9 Fuel Fill Door Opener Malfunction TRS AD  
P04CD Fuel Fill Door Opener Switch Circuit On Stuck TRS AD  
P04E0 Evaporative Emission (EVAP) Canister Purge Valve Stuck Closed TRS AD  
P04EE 0.02 inch Leak (Tank Leak) TRS AD  
P04EF 0.02 inch Leak (Canister Leak) TRS AD  
P050A Cold Start Idle Air Control System Performance Problem TRS AD  
P050B Cold Start Ignition Timing Control System Performance Problem TRS AD  
P050D Cold Start Idle Speed Problem TRS AD  
P0522 Rocker Arm Oil Pressure Sensor Circuit Low Voltage TRS AD  
P0523 Rocker Arm Oil Pressure Sensor Circuit High Voltage TRS AD  
P0532 A/C Pressure Sensor Circuit Low Voltage TRS AD  
P0533 A/C Pressure Sensor Circuit High Voltage TRS AD  
P0560 Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage TRS AD  
P0563 Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage TRS AD  
P0571 Brake Pedal Position Switch Circuit Malfunction TRS AD  
P0600 Powertrain Control Module (PCM) Serial Communication Failure TRS AD  
P0602 Powertrain Control Module (PCM) Programming Error TRS AD  
P0606 Powertrain Control Module (PCM) Processor Malfunction TRS AD  
P060A Powertrain Control Module (PCM) Internal Control Module Malfunction TRS AD  
P061B Powertrain Control Module (PCM) Internal Malfunction (Torque Calculation) TRS AD  
P062F Powertrain Control Module (PCM) Internal Control Module Keep Alive Memory (KAM) Error TRS AD  
P0630 VIN Not Programmed or Mismatch TRS AD  
P0641 Sensor Reference Voltage A Malfunction TRS AD  
P0651 Sensor Reference Voltage B Malfunction TRS AD  
P0657 Powertrain Control Module (PCM) Power Supply Circuit Malfunction TRS AD  
P06A8 Internal VCC Power Malfunction TRS AD  
P06AF Engine Stall TRS AD  

NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.

DTC Detection Item Troubleshooting Advanced Diagnostics Note
P0700 Transmission Control System (MIL Reqest) TRS AD  
P0703 Brake Pedal Position Switch (NC) Malfunction TRS AD  
P0C2F GEN-ENG Angular Speed Correlation Malfunction TRS AD  
P100A Electric VTC Motor Circuit Malfunction TRS AD  
P100B Electric VTC Motor Control Module Malfunction TRS AD  
P100C Electric VTC Motor Speed Signal Circuit Malfunction TRS AD  
P100D Electric VTC Motor Power Relay Circuit Stuck On TRS AD  
P145F Evaporative Emission (EVAP) Leak Check Module Pressure Sensor Range/Performance Problem TRS AD  
P1461 Evaporative Emission (EVAP) Leak Check Module Pressure Sensor Shifts TRS AD  
P1462 Evaporative Emission (EVAP) Leak Check Module Pressure Decompression Defect TRS AD  
P14A0 Engine Abnormal Vibration TRS AD  
P154A Battery Sensor Internal Failure TRS AD  
P1658 Electronic Throttle Control System (ETCS) Control Relay ON Malfunction TRS AD  
P1659 Electronic Throttle Control System (ETCS) Control Relay OFF Malfunction TRS AD  
P1683 Throttle Valve Default Position Spring Performance Problem TRS AD  
P1684 Throttle Valve Return Spring Performance Problem TRS AD  
P16E3 PGM-FI-Battery Sensor LIN Communication Error TRS AD  
P16EA Electric Engine Coolant Pump Relay Stuck On TRS AD  
P1A48 Powertrain Control Module (PCM) Internal Malfunction (SBW Different Run) TRS AD  
P1A49 Powertrain Control Module (PCM) Internal Malfunction (SBW Parking Position) TRS AD  
P1A4A Powertrain Control Module (PCM) Internal Malfunction (SBW Display Position) TRS AD  
P1A51 Powertrain Control Module (PCM) Internal Malfunction (Torque Calculation Acceleration) TRS AD  
P1A52 Powertrain Control Module (PCM) Internal Malfunction (Torque Calculation Deceleration) TRS AD  
P1A53 Powertrain Control Module (PCM) Internal Malfunction (Torque Calculation Different Run) TRS AD  
P2096 Post Catalyst Fuel Trim System Too Lean TRS AD  
P2097 Post Catalyst Fuel Trim System Too Rich TRS AD  
P2101 Electronic Throttle Control System (ETCS) Malfunction TRS AD  
P2108 Throttle Actuator Control Module Performance TRS AD  
P2118 Throttle Actuator Current Range/Performance Problem TRS AD  
P2119 Throttle Actuator Control Throttle Body Range/Performance TRS AD  
P2121 Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Out of Range TRS AD  
P2122 Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit Low Voltage TRS AD  
P2123 Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit High Voltage TRS AD  
P2126 Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Out of Range TRS AD  
P2127 Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Circuit Low Voltage TRS AD  
P2128 Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Circuit High Voltage TRS AD  
P2135 Throttle Position (TP) Sensor A/B Incorrect Voltage Correlation TRS AD  

NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.

DTC Detection Item Troubleshooting Advanced Diagnostics Note
P2138 Accelerator Pedal Position (APP) Sensor A/B (Throttle Position (TP) Sensor D/E) Incorrect Voltage Correlation TRS AD  
P2176 Throttle Actuator Control System Idle Position Not Learned TRS AD  
P2182 Engine Coolant Temperature (ECT) Sensor 2 Out of Range TRS AD  
P2183 Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/Performance Problem TRS AD  
P2184 Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage TRS AD  
P2185 Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage TRS AD  
P2195 Air Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean TRS AD  
P2199 Intake Air Temperature (IAT) Sensor 1-2 Incorrect Correlation TRS AD  
P219A Air-Fuel Ratio Variation of Cylinder TRS AD  
P2226 Barometric Pressure (BARO) Sensor Circuit Malfunction TRS AD  
P2228 Barometric Pressure (BARO) Sensor Circuit Low Voltage TRS AD  
P2229 Barometric Pressure (BARO) Sensor Circuit High Voltage TRS AD  
P2237 Air Fuel Ratio (A/F) Sensor (Sensor 1) IP Circuit High Voltage TRS AD  
P2238 Air Fuel Ratio (A/F) Sensor (Sensor 1) IP Circuit Low Voltage TRS AD  
P2243 Air Fuel Ratio (A/F) Sensor (Sensor 1) VCENT Circuit High Voltage TRS AD  
P2245 Air Fuel Ratio (A/F) Sensor (Sensor 1) VCENT Circuit Low Voltage TRS AD  
P2251 Air Fuel Ratio (A/F) Sensor (Sensor 1) VS Circuit High Voltage TRS AD  
P2252 Air Fuel Ratio (A/F) Sensor (Sensor 1) VS Circuit Low Voltage TRS AD  
P2270 Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Circuit Signal Stuck Lean TRS AD  
P2279 Intake Air System Leak TRS AD  
P2401 Evaporative Emission (EVAP) Leak Check Pump Control Circuit Low Voltage TRS AD  
P2402 Evaporative Emission (EVAP) Leak Check Pump Control Circuit High Voltage TRS AD  
P2413 Exhaust Gas Recirculation (EGR) System Malfunction TRS AD  
P2419 Fuel Vapor Containment Valve Control Circuit Low Voltage TRS AD  
P2420 Fuel Vapor Containment Valve Control Circuit High Voltage TRS AD  
P2450 Fuel Vapor Containment Valve Leak TRS AD  
P2451 Fuel Vapor Containment Valve Stuck Close TRS AD  
P24B8 Evaporative Emission (EVAP) Leak Check Module Absolute Pressure Sensor Out of Range TRS AD  
P24B9 Evaporative Emission (EVAP) Leak Check Module Absolute Pressure Sensor Range/Performance Problem TRS AD  
P24BA Evaporative Emission (EVAP) Leak Check Module Absolute Pressure Sensor Circuit Low Voltage TRS AD  
P24BB Evaporative Emission (EVAP) Leak Check Module Absolute Pressure Sensor Circuit High Voltage TRS AD  
P24BE Canister Change Over Valve Control Circuit Low Voltage TRS AD  
P24BF Canister Change Over Valve Control Circuit High Voltage TRS AD  
P24C1 Canister Change Over Valve Stuck Close TRS AD  
P2561 HVAC Malfunction TRS AD  
P2601 Electric Engine Coolant Pump Range/Performance Problem TRS AD  
P2602 Electric Engine Coolant Pump Circuit Low Voltage TRS AD  
P2603 Electric Engine Coolant Pump Circuit High Voltage TRS AD  
P2610 Powertrain Control Module (PCM) Ignition Off Internal Timer Malfunction TRS AD  
P2646 Rocker Arm Oil Pressure Switch A (Bank 1) Circuit Low Voltage TRS AD  
P2647 Rocker Arm Oil Pressure Switch A (Bank 1) Circuit High Voltage TRS AD  

NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.

DTC Detection Item Troubleshooting Advanced Diagnostics Note
P2648 Rocker Arm Oil Control Solenoid Circuit Low Voltage TRS AD  
P2649 Rocker Arm Oil Control Solenoid Circuit High Voltage TRS AD  
P26A3 Electric Water Valve Malfunction TRS AD  
P2A00 Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Range/Performance Problem TRS AD  
P2A01 Secondary Heated Oxygen Sensor (Secondary HO2S) Circuit Range/Performance Problem TRS AD  
U0029 F-CAN Malfunction (BUS-OFF(Powertrain Control Module (PCM))) TRS AD  
U0038 EPP-CAN Malfunction (BUS-OFF(Powertrain Control Module (PCM)))/PT-CAN Malfunction (TCM ECU BUS-OFF) TRS AD  
U0047 F-CAN Malfunction For The Second Channel (BUS-OFF (Powertrain Control Module (PCM))) TRS AD  
U0103 F-CAN Malfunction (Powertrain Control Module (PCM)-SBW Shifter) TRS AD  
U0104 F-CAN Malfunction (Powertrain Control Module (PCM)-Driving Support System Control Unit) TRS AD  
U010F F-CAN Malfunction (Powertrain Control Module (PCM)-Climate Control Unit) TRS AD  
U0110 EPP-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module) TRS AD  
U0111 EPP-CAN Malfunction (Powertrain Control Module (PCM)-Battery Condition Monitor Module) TRS AD  
U0122 F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Modulator-Control Unit) TRS AD  
U0129 F-CAN Malfunction (Powertrain Control Module (PCM)-Electric Servo Brake Control Unit) TRS AD  
U012D EPP-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module) TRS AD  
U0131 F-CAN Malfunction (Powertrain Control Module (PCM)-EPS Control Unit) TRS AD  
U0146 F-CAN Malfunction (Powertrain Control Module (PCM)-CAN Gateway) TRS AD  
U0151 F-CAN Malfunction (Powertrain Control Module (PCM)-SRS Unit) TRS AD  
U0155 F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module) TRS AD  
U019B EPP-CAN Malfunction (Powertrain Control Module (PCM) - Battery Charge Control Module) TRS AD  
U0291 EPP-CAN Malfunction (Powertrain Control Module (PCM)-Park Pawl Actuator Driver Unit) TRS AD  
U0301 PGM-FI System and Transmission System Program Version Mismatch TRS AD  
U1205 EPP-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module) TRS AD  
U1206 EPP-CAN Malfunction (Powertrain Control Module (PCM)-Battery Condition Monitor Module) TRS AD  
U1207 F-CAN Malfunction (Powertrain Control Module (PCM)-A/C Compressor Driver) TRS AD  
U12A4 F-CAN Malfunction (Powertrain Control Module (PCM)-Electric Coolant Heater) TRS AD  
U12A5 EPP-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module) TRS AD  
U12AA EPP-CAN Malfunction (Powertrain Control Module (PCM)-SBW Shifter) TRS AD  
U1603 F-CAN Malfunction (Powertrain Control Module (PCM)-Battery Condition Monitor Module) TRS AD  
U1604 F-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module) TRS AD  

NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.

DTC Detection Item Troubleshooting Advanced Diagnostics Note
U1605 F-CAN Malfunction (Powertrain Control Module (PCM)-Motor Control Module) TRS AD  
U1607 F-CAN Malfunction (Powertrain Control Module (PCM) - Battery Charge Control Module) TRS AD  
U1608 EPP-CAN Malfunction (Powertrain Control Module (PCM) - Battery Charge Control Module) TRS AD  
U160B F-CAN Malfunction (Powertrain Control Module (PCM)-SBW Shifter) TRS AD  

NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.

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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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