The Lemon IndexA transmission fluid pressure switch reads too high.
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
Failed switch. Then: wiring fault.
Owners named P0843 in 6 complaints to the U.S. government, most often on the Honda.
The details
What P0843 means
A transmission fluid pressure switch reads too high.
Can I drive with P0843?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
33% of the owner complaints that name P0843 also say the car transmission slips or shifts hard. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P0843
- Failed switch
- Wiring fault
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Transmission slips or shifts hard: 33% of complaints
- Stalls or shuts off: 33% of complaints
- Loses power or goes into limp mode: 33% of complaints
Share of complaints naming the code whose text also mentions each problem.
Related codes
P0841 P0845 P0840 P0846 P0850 P0826 P0867 P0868
Quick answers
What does P0843 mean?
Transmission Fluid Pressure Sensor/Switch A Circuit High. A transmission fluid pressure switch reads too high.
Can I drive with P0843?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
What causes P0843?
Failed switch; Wiring fault.
Counts: NHTSA owner complaints whose text names P0843. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.