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--- obd2 [2026/08/09 18:08] – external edit 127.0.0.1
+++ obd2 [2026/08/10 13:47] (current) – external edit 127.0.0.1
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 cycles**. The codes worth attention are the **powertrain P-codes**, which point at real sensor / HV
 faults. Read them all with 0x19 first, then judge.
+===== Battery management fault codes =====
+Manufacturer-specific codes (second character `1`, e.g. ''P110C00'') turn out to be properly documented and genuinely EV-relevant — HV contactor voltage checks, BMS current-sensor faults, CAN gateway message timeouts, crash/airbag signalling. None of them are combustion-engine leftovers. The following battery-management codes have been identified and confirmed:
+^ Code ^ Meaning ^
+| ''P112868'' | CAN collision (crash) signal fault |
+| ''U11FA87'' | Gateway message 0x2BB timeout |
+| ''U11FB87'' | Gateway message 0x2DF timeout |
+| ''U11FC87'' | Gateway message 0x3AA timeout |
+| ''U11FD87'' | Gateway message 0x050 timeout |
+| ''U11FE87'' | Gateway message 0x2F1 timeout |
+| ''U11FF87'' | Gateway message 0x195 timeout |
+| ''U120087'' | Gateway message 0x37F timeout |
+| ''U120187'' | Gateway message 0x28C timeout |
+| ''U120287'' | Gateway message 0x17D timeout |
+| ''U002888'' | CAN bus disabled (bus off ≥3 s while awake) |
+| ''U00BA88'' | DC fast-charge CAN bus disabled |
+| ''U10BA87'' | DC fast-charge message timeout (charge controller) |
+| ''U112182'' | Airbag ECU crash-message counter fault |
+| ''U112183'' | Airbag ECU crash-message checksum fault |
+| ''U011187'' | Communication loss with the BMS (message 0x2C7 missing 10 s) |
+| ''P110364'' | Main-relay downstream voltage plausibility fault |
+| ''P110386'' | Main-relay voltage invalid |
+| ''P11021C'' | Battery voltage out of allowable range |
+| ''P11081C'' | Internal current sensor (CAB) supply voltage faulty |
+| ''P110A1C'' | Internal current sensor (LEM) supply voltage faulty |
+| ''P110C00'' | 12 V supply shuts down abnormally |
+| ''P11011D'' | Shunt current out of allowable range |
+| ''P110162'' | Shunt current signal plausibility check failed |
+| ''P110164'' | Shunt current sensor self-learn fault |
+| ''P110167'' | Shunt current sensor fault |
+| ''P110192'' | Current measurement fault in two circuits |
+| ''P110711'' | Internal current sensor (Iem) shorted to ground |
+| ''P110712'' | Internal current sensor (Iem) shorted to supply |
+| ''P110264'' | Battery signal plausibility check failed |
+| ''P110286'' | Invalid battery voltage signal |
+| ''P110464'' | DC fast-charge relay downstream voltage plausibility fault |
+| ''P110486'' | DC charging voltage invalid |
+| ''P11B467'' | DC fast-charge voltage fault |
+| ''P11051D'' | Hall current sensor reading out of range |
+| ''P110562'' | Hall current signal plausibility check failed |
+| ''P110564'' | Hall current sensor self-learn fault |
+| ''P110567'' | Defective Hall current sensor |
+| ''P110592'' | Deviation between bus current from different sensors too large |
+| ''P110609'' | Internal current sensor (CAB) fault |
+| ''P11061C'' | Internal current sensor (CAB) supply voltage faulty |
+| ''P110692'' | Interior current sensor (CAB) fault after BMS self-test |
+| ''P115B92'' | Simultaneous failure of two current-circuit sensors |
+| ''U11F487'' | Internal current sensor (CAB) message timeout |
+Every code here clears automatically if absent for 40 drive cycles, or via a diagnostic tool. The standard repair escalation is: cross-check codes on other modules → inspect harness/connector → check HV harness insulation resistance (target >1.5 MΩ, ≥120 MΩ for the PTC heater, at 500 V DC) → replace the battery pack assembly as a unit — there is no component-level BMS board repair path.
+By contrast, the **generic/SAE codes** (second character `0`, e.g. the ''P02C1''/''P01C1'' seen during live scans above) sit in ranges the standard defines for combustion-engine subsystems — ''P02xx'' is nominally "fuel injector circuit," meaningless on this car. The ECU reporting them self-identifies over Mode 09 as **''HPCM-HybridPtCtrl''** ("Hybrid Powertrain Control Module") — a real hint its diagnostic software is inherited from a hybrid/ICE platform, with some legacy generic checks never fully pruned for the pure-EV variant. Treat unexplained generic P0-range codes with suspicion; the manufacturer-specific P1xx range is the trustworthy one.
+Charging-system codes have also turned up, though only as bare identifiers so far (no definitions found yet): ''P120019'', ''P120119'', ''P122000'', ''P122100'', ''P128A19'', ''P128B98'', ''P12A500''. If anyone can pin down what these mean, please add it here.
+Coverage note: a systematic search turned up fault-code documentation **only** for the battery-management codes above and this bare charging-system list — nothing yet for ESP, parking brake, brake booster, steering, HVAC, or body-electrics modules. If your car throws a code in one of those areas, this wiki doesn't have it documented — please add whatever you find.
 ===== Decoding the raw values =====