The Lemon Index

Check engine light · Engine codes

P0871: Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance.

Powertrain · GenericP0871
Fix soon
What it means

A third 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 P0871 in 6 complaints to the U.S. government, most often on the Chevrolet Spark.

Cars owners report it on

Complaints that name P0871, by model. Raw counts, not a failure rate: popular models get more complaints.

Transmission problems by year: Chevrolet Spark

The details

What P0871 means

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

Can I drive with P0871?

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 P0871 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 P0871
  • 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
  • Warning lights and electrical faults: 33% of complaints

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

Related codes

P0868 P0867 P0884 P0850 P0846 P0845 P0843 P0841

Quick answers

What does P0871 mean?

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

Can I drive with P0871?

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

What causes P0871?

Failing switch; Low fluid.

Counts: NHTSA owner complaints whose text names P0871. 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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