Automatic shifts harshly or stays in first (TSB 00-012)
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What causes "Automatic shifts harshly or stays in first (TSB 00-012)" on the Honda Civic EK (1996-2000), and how is it fixed?
Contamination of the linear solenoid and its passages, or a broken internal spring. Fix: Flush with Honda ATF-Z1 and replace the linear solenoid; if shift feel does not improve, the bulletin calls for a transmission.
Symptoms
Harsh 1-2 and 2-3 upshifts at light throttle, or stuck in first; the MIL may show P0730 or P0715.
Cause
Contamination of the linear solenoid and its passages, or a broken internal spring.
Fix (summary)
Flush with Honda ATF-Z1 and replace the linear solenoid; if shift feel does not improve, the bulletin calls for a transmission.
Related build entries
Other EK problems
- Recall 96V-106: brake booster check valve can stick (1996)
- Recall 97V-193: passenger airbag assembled wrong (1997-98)
- Recall 99E-015: accessory floor mat can catch the accelerator (1996-98)
- Recall 02V-120: ignition switch contacts can wear (1998-2000)
- Recalls 20V-026 / 20V-027: driver airbag inflator (1996-2000)
- Recalls 01V-380 / 02V-051: faulty rear seat belt buckles (2000)
More for this car
- All Honda Civic EK (1996-2000) fitment answers · EK common problems
- Newsletter archive: past issues with every new and corrected entry
Sources
- Honda TSB 00-012: Automatic transmission harsh shifts or stays in first (1996-2000 Civic, see VINs) — American Honda (service bulletin) via Operation CHARM (mfr spec; read 2026-10-26; full page read)
Summaries are in our own words. Not repair instructions; consult the factory service manual.
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