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C2126 fault code: what it means

C2126: TPMS transmitter ID not received (main mode) on a Lexus: the receiver is not getting tyre sensor signals.

Chassis (brakes, steering, suspension) · Keep an eye on

Usual causes, most likely first

  1. sensor IDs not registered
  2. failed sensor batteries
  3. TPMS receiver fault
  4. non-TPMS wheels fitted

C2126 by make

Lexus

TPMS transmitter ID not received (main mode) on a Lexus: the receiver is not getting tyre sensor signals.

Usual causes: sensor IDs not registered; failed sensor batteries; TPMS receiver fault; non-TPMS wheels fitted

Toyota

TPMS transmitter ID not received (main mode): the receiver is not getting signals from the tyre sensors.

Usual causes: sensor IDs not registered; failed sensor batteries; TPMS receiver fault; non-TPMS wheels fitted

Not sure what C2126 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.