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Compare Similar Car Codes Across Manufacturer Documents

By CarCodes Editorial · Research by Kim Minseong

Research checked 2026-11-01 · US vehicles

Seven source-linked comparisons explain why the same code or symptom can require different vehicle checks and repair branches.

Source check and limits

This reference supports the stated topic only. Model, model year, equipment, current rule or individual vehicle conditions may differ; check the original source before acting.

Read the Mazda original: Non-turbo coolant-control thermostat P0126 Source date: 2025-12-23; research checked: 2026-11-01.

Seven comparisons from the supplied research

P0126: older thermostat route versus 2026 PCM logicCompare distinct source and vehicle conditionsP0C73: Sonata, Niro and Carnival are different repairsCompare distinct source and vehicle conditionsMach-E P0ADA: production date and recall gateCompare distinct source and vehicle conditionsBolt P0534: verified leak versus diagnostic softwareCompare distinct source and vehicle conditionsGM P050D: V8, LK0 and LIH must not be conflatedCompare distinct source and vehicle conditionsNo dashboard code is still a useful diagnostic scenarioCompare distinct source and vehicle conditionsHigh-voltage isolation: module fault, software distinction and escalationCompare distinct source and vehicle conditions
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Use comparisons as questions

Different manufacturers and build groups can use the same code root for different conditions. These comparisons show which year, engine, suffix, symptom or campaign gate matters before a shop chooses a procedure. None is a universal replacement instruction or a verified fitment list.

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Sources and scope

  1. Mazda — Non-turbo coolant-control thermostat P0126 (01-003/25) Document: 2025-12-23 · Research checked: 2026-11-01
  2. Mazda — Fail-safe thermostat limited warranty extension (SSP D8) Document: 2024-10-30 · Research checked: 2026-11-01
  3. Mazda North American Operations — U.S. market cutoff: CX-3 and Mazda6 discontinued for MY2022 (Statement on Mazda6 and CX-3) Document: 2021-05-21 · Research checked: 2026-11-01
  4. Mazda — 2026 Mazda3/CX-30 P0126 PCM update (DRW59) Document: date not recorded · Research checked: 2026-11-01
  5. Hyundai — Sonata Hybrid electric water pump (14-HC-001) Document: 2014-07 · Research checked: 2026-11-01
  6. Kia — Niro auxiliary electric water pump partial repair (ELE 211 Rev1) Document: 2021-02-23 · Research checked: 2026-11-01
  7. Kia — Carnival Hybrid MCU P0C73 logic update (ELE386 / SA617) Document: 2025-06 · Research checked: 2026-11-01
  8. Ford — Mach-E P0ADA software branch (25-2145) Document: 2025-04-11 · Research checked: 2026-11-01
  9. Ford — Early Mach-E HVBJB repair branch (24-2017) Document: 2024-01-25 · Research checked: 2026-11-01
  10. General Motors — 2021 Bolt warm A/C and ACCM seal leak (PIC6436) Document: 2021-04-21 · Research checked: 2026-11-01
  11. General Motors — 2022 Bolt P0534 software versus leak (21-NA-266) Document: 2021-11 · Research checked: 2026-11-01
  12. General Motors — V8 cold misfire: coolant-entry verification (20-NA-166) Document: 2024-03 · Research checked: 2026-11-01
  13. General Motors — LK0 P050D fuel injectors and PCM update (24-NA-244) Document: 2025-03 · Research checked: 2026-11-01
  14. General Motors — LIH camshaft cover and early oil consumption (PIP5947C) Document: 2024-12-05 · Research checked: 2026-11-01
  15. Subaru — Telematics parasitic-current diagnostic guidance (15-308-23R) Document: 2025-10-28 · Research checked: 2026-11-01
  16. Honda — Civic compressor shaft-seal warranty extension (23-039 v5) Document: 2024-06-19 · Research checked: 2026-11-01
  17. Honda — Pilot 6AT judder and fluid deterioration (17-014 v1) Document: 2017-02-18 · Research checked: 2026-11-01
  18. Nissan — LEAF no start P31E7 and P0AA6 (NTB23-024A) Document: 2024-05-10 · Research checked: 2026-11-01
  19. General Motors — EV battery isolation and coolant-loss data collection (23-NA-151) Document: date not recorded · Research checked: 2026-11-01
  20. FCA US — Pacifica BPCM flash and false isolation indication (08-043-17 Rev B) Document: date not recorded · Research checked: 2026-11-01

Research snapshot: 2026-11-01. Source documents may have newer revisions. Verify current instructions and VIN eligibility with the manufacturer.

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