EV manufacturer
Honda EV diagnostics
Browse in-scope 2021+ battery-electric and plug-in hybrid model families, plus evidence-labelled diagnostic records.
2 model families18 verified18 accepted research94 reference candidates
Honda PrologueModels
Verified Manufacturer-level verified records
These records passed the verified evidence gate. Model applicability is shown only where separately supported.
B18DAAll Rights Reserved Page 1 of 1B1EDAAll Rights Reserved Page 1 of 1U3000-49by-step process in isolating the faulty component. In most situations, the SRS Unit should be last on the list of components to replace. Here is a quick tip for troubleshooting a fU357BIf all of these DTCs are NOT SET as current or history, this bulletin does not apply; continue with normP2C8BIf all of these DTCs are NOT SET as current or history, this bulletinU357AIf all of these DTCs are NOT SET as current or history, this bulletin does not apply; continue wiU3579If all of these DTCs are NOT SET as current or history, this bulletin does not apply; contU357DIf all of these DTCs are NOT SET as current or history, this bulletin does not apply; continue with normal troubleshooU3577If all of these DTCs are NOT SET as current or history, this bulletin does nU35AFIf all of these DTCs are NOT SET as current or history, this bulletin does not apply; continue with normal troubleshooting. 2. FolloP2C8AIf all of these DTCs are NOT SET as current or history, this bU3578If all of these DTCs are NOT SET as current or history, this bulletin does not applU357CIf all of these DTCs are NOT SET as current or history, this bulletin does not apply; continue with normal trouU357EIf all of these DTCs are NOT SET as current or history, this bulletin does not apply; continue with normal troubleshooting. 2P0534Air Conditioning Refrigerant Charge LowP0530Air Conditioning Refrigerant Pressure Sensor CircuitU300049 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-steP0456slip feeling when tightened. T
Accepted Research Accepted research
These curated research findings are useful for discovery but are not yet treated as verified canonical diagnostics.
B2BAAPrologue (2024): Bulletin context: code related to a high-voltage service warning and reduced heating/defogging performance in very cold conditions.
C2A22Prologue (2024): Bulletin context: service brake assist warning. A clicking or rattling noise near the brake pedal may accompany it.
P0530Prologue (2024–2025): A/C refrigerant pressure sensor circuit fault.
P0534Prologue (2024–2025): A/C refrigerant charge level is low.
P061BPrologue (2024): Bulletin context: code related to the drive motor control module.
P2C8APrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
P2C8BPrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U0140Prologue (2024): Bulletin context: communication code related to the body control module.
U018BPrologue (2024): Bulletin context: communication code related to the keyless-entry transceiver.
U3577Prologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U3578Prologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U3579Prologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U357APrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U357BPrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U357CPrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U357DPrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U357EPrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
U35AFPrologue (2024–2025): Bulletin context: part of a code group related to BECM calibration. An HV service warning and 12 V battery discharge may occur.
Reference Brand reference codes
Openly licensed reference definitions are discovery data, not proof of applicability to a particular Honda EV.
P1106BARO Circuit Range Performance Malfunction
P1107BARO Circuit Low Input
P1108BARO Circuit High Input
P1121Throttle Position Lower Than Expected
P1122Throttle Position Higher Than Expected
P1128MAP Lower Than Expected
P1129MAP Higher Than Expected
P1162HO2S11 Circuit Fault Bank 1 Sensor 1
P1163HO2S11 Slow Response Bank 1 Sensor 1
P1164HO2S11 Circuit Fault Bank 1 Sensor 1
P1165HO2S11 Slow Response Bank 1 Sensor 1
P1166HO2S11 Heater Circuit Fault Bank 1 Sensor 1
P1167HO2S11 Heater Circuit VS+ Fault Bank 1 Sensor 1
P1168HO2S11 Label Circuit Low Voltage Fault Bank 1 Sensor 1
P1169HO2S11 Label Circuit High Voltage Fault Bank 1 Sensor 1
P1201Cylinder 1 Misfire
P1202Cylinder 2 Misfire
P1203Cylinder 3 Misfire
P1204Cylinder 4 Misfire
P1205Cylinder 5 Misfire
P1206Cylinder 6 Misfire
P1241Throttle Vent Control Motor Circuit 1 Malfunction
P1242Throttle Vent Control Motor Circuit 2 Malfunction
P1243Throttle Position Insufficient
P1244Closed Throttle Position Insufficient
P1246Accelerator Position Sensor 1 Circuit Malfunction
P1247Accelerator Position Sensor 2 Circuit Malfunction
P1248Accelerator Position Sensors 1 & 2 Improper Correlation
P1253VTEC System Circuit Fault
P1259VTEC System Malfunction Rear Bank 1
P1279VTEC System Malfunction Front Bank 2
P1297ELD Circuit Low Input
P1298Electrical Load Detector Circuit High Voltage
P1300Random Misfire
P1301Cylinder 1 Misfire
P1302Cylinder 2 Misfire
P1303Cylinder 3 Misfire
P1304Cylinder 4 Misfire
P1305Cylinder 5 Misfire
P1306Cylinder 6 Misfire
P1316Spark Plug Voltage Detection Circuit Malfunction Front Bank
P1317Spark Plug Voltage Detection Circuit Malfunction Rear Bank
P1318Spark Plug Voltage Detection Module Reset Circuit Malfunction Front Bank
P1319Spark Plug Voltage Detection Module Reset Circuit Malfunction Rear Bank
P1324Knock Sensor Power Source Circuit Low Voltage
P1336CKP Sensor B Range Performance
P1337CKP Sensor B Low Input
P1359CKP TDC Sensor Circuit Connector Disconnection
P1361TDC Sensor Intermittent Interruption
P1362TDC1 Sensor No Signal
P1366TDC2 Sensor Intermittent
P1367TDC2 Sensor No Signal
P1381CYP Sensor A Intermittent Interruption
P1382CYP Sensor A No Signal
P1386CYP Sensor B Intermittent Interruption
P1387CYP Sensor B No Signal
P1456Evaporative Emission Control System Leak Detected Fuel Tank System
P1457Evaporative Emission Control System Leak Detected Control Canister System
P1459EVAP Purge Flow Switch Malfunction
P1491EGR Valve Lift Insufficient Detected
P1498EGR Valve Lift Sensor High Voltage
P1508IAC Valve Circuit Failure
P1519IAC Valve Circuit Failure
P1607ECM Internal Circuit Failure A
P1608ECM Internal Circuit Failure B
P1655TMA or TMB Signal Line Fault
P1656Automatic Transmission System Malfunction
P1660A/T FI Data Line Failure
P1671A/T FI Data Line No Signal
P1672A/T FI Data Line Failure
P1676Traction Control System FI Data Line No Signal
P1677Traction Control System FI Data Line Failure
P1678FPTDR Signal Line Failure
P1681A/T FI Signal A Low Input
P1682A/T FI Signal A High Input
P1686A/T FI Signal B Low Input
P1687A/T FI Signal B High Input
P1690Traction Control System STB Line Failure
P1696Traction Control Fuel Cut Signal Low Input
P1697Traction Control Fuel Cut Signal High Input
P1705TCM A/T Gear Position Switch Circuit Shorted
P1706TCM A/T Gear Position Switch Circuit Open
P1709Automatic Transmission System Malfunction
P1738Automatic Transmission System Malfunction
P1739Automatic Transmission System Malfunction
P1753TCM A/T Lockup Solenoid Valve "A" Fault
P1758TCM A/T Lockup Solenoid Valve "B" Fault
P1768Automatic Transmission System Malfunction
P1773Automatic Transmission System Malfunction
P1788Automatic Transmission System Malfunction
P1790TCM A/T TP Sensor Circuit Fault
P1791TCM A/T Vehicle Speed Sensor Circuit Fault
P1793Automatic Transmission System Malfunction
P1795Automatic Transmission System Malfunction