Powertrain, generic (extended)

P213B EGR Throttle Control Circuit B Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P213B is the functional check of EGR throttle B rather than an electrical one. The module compares the position it commands with the position the flap actually reaches, or judges whether the feedback is plausible; if the gap persists beyond a set time, P213B is logged. Regulating flaps sit in a stream of recirculated exhaust and crankcase vapour, so soot and oil deposits that make the blade stiff are the usual reason, followed by worn gears or a weak motor. No manufacturer documents P213B publicly; CARB requires output components to be checked for proper function, and EGR control to be monitored for reaching its limits. The same check for flap A is P0488; pure wiring faults on B appear as P213A, P213C or P213D. The driver notices hesitation, smoke or a power limit.

Likely causes

Flap stiff or stuck from soot and oil deposits
Worn gear train or weak actuator motor
Implausible position feedback from the flap sensor
Outdated engine software or missing flap adaptation

Symptoms

  • Check engine lamp on
  • Hesitation, black smoke or reduced power
  • Clicking or humming from the flap
  • Filter regeneration may be postponed

Repair estimate

DifficultyMediumDIY possible
Parts and labour€60–700
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

egr throttle b

Related codes

P213AP213CP213DP0488P0401

References: law.cornell.edu, ms-motorservice.com.