OBD Guide
ENFRDEESPT

B2870

Right Rear Tire Pressure Sensor Fault

B2870 is an OBD-II diagnostic trouble code meaning: Right Rear Tire Pressure Sensor Fault. Common causes: dead tpms sensor battery (typical life 5-10 years), physical damage to the sensor during tire fitting. Estimated repair cost: $22–89.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • The TPMS indicator (wheel-shaped lamp with exclamation mark) is on.
  • There is no data on the pressure in the right rear wheel on the display
  • TPMS does not detect the right rear wheel
  • TPMS fault message on dashboard

Causes

  • Dead TPMS sensor battery (typical life 5-10 years)
  • Physical damage to the sensor during tire fitting
  • Installing a wheel without TPMS sensor (spare wheel)
  • Loss of synchronization after rearranging wheels without retraining the system
  • Malfunction of the TPMS receiving module or antenna
  • Deformation of the rim that disrupts the sensor mounting

How to Fix

  1. Check to see if a wheel rotation or tire change was performed without relearning the TPMS
  2. Perform relearn procedure for TPMS sensors according to instructions
  3. Check the presence and physical condition of the TPMS sensor in the right rear wheel
  4. Read error codes using a scan tool or specialized TPMS tool
  5. Check if the sensor is transmitting a signal (with a special TPMS tester)
  6. If the sensor battery is low or the sensor is damaged, replace the TPMS sensor

Related codes

B2867B2868B2869C0750

FAQ

What does the B2870 code mean?

B2870 is an OBD-II diagnostic trouble code that indicates: Right Rear Tire Pressure Sensor Fault

What causes a B2870 error code?

The most common causes of B2870 include: Dead TPMS sensor battery (typical life 5-10 years); Physical damage to the sensor during tire fitting; Installing a wheel without TPMS sensor (spare wheel); Loss of synchronization after rearranging wheels without retraining the system.

How do I fix a B2870 diagnostic trouble code?

To fix B2870: Check to see if a wheel rotation or tire change was performed without relearning the TPMS. Perform relearn procedure for TPMS sensors according to instructions. Check the presence and physical condition of the TPMS sensor in the right rear wheel. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2870?

Yes, but get it checked soon

How much does it cost to fix B2870?

The estimated repair cost for B2870 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat