The Lemon Index

Check engine light · Engine codes

P0846: Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance.

Powertrain · GenericP0846
Fix soon
What it means

A second transmission fluid pressure reading doesn't look right.

How serious

Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.

Where a shop starts

Failing switch. Then: low fluid.

Owners named P0846 in 6 complaints to the U.S. government, most often on the Nissan Sentra.

Cars owners report it on

Complaints that name P0846, by model. Raw counts, not a failure rate: popular models get more complaints.

Transmission problems by year: Nissan Sentra

The details

What P0846 means

A second transmission fluid pressure reading doesn't look right.

Can I drive with P0846?

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 P0846 also say the car loses power or goes into limp mode. A complaint can describe more than one problem, so this doesn't prove the code caused it.

Common causes of P0846
  • Failing switch
  • Low fluid

A shop should confirm the cause with a scan and tests before replacing parts.

What owners describe
  • Loses power or goes into limp mode: 33% of complaints
  • Transmission slips or shifts hard: 33% of complaints

Share of complaints naming the code whose text also mentions each problem.

Related codes

P0845 P0843 P0841 P0840 P0850 P0826 P0867 P0868

Quick answers

What does P0846 mean?

Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance. A second transmission fluid pressure reading doesn't look right.

Can I drive with P0846?

Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.

What causes P0846?

Failing switch; Low fluid.

Counts: NHTSA owner complaints whose text names P0846. 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.

Updated · Free to use with credit: Source: The Lemon Index (lemonindex.com). Get the data

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