P213B: EGR Throttle Control Circuit B Range/Performance

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.

Medium severity. Can I keep driving?You can normally drive in moderation, but get it repaired soon: if the valve is stuck open, the engine may idle very poorly.

Symptoms

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

Most 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Outdated engine software or missing flap adaptation

What to check, in order

Start with the simplest. You can tick off each step.

Check the connector and any vacuum hoses
Compare the reading with other engine data while varying the engine speed.
Use live data to compare the commanded opening with the actual opening
Clean the valve and passages if they are clogged with carbon
Test the actuator with the scanner
Replace the valve if it still does not follow the command after cleaning

Good to know

Repair difficulty: medium
It can trigger limp mode.
It affects emissions.

What each character of P213B means

P: Powertrain: engine and transmission
2: Generic code: same on every make
1: Air and fuel
3B: Specific fault in that system

Frequently asked questions

Can I keep driving with code P213B?

You can normally drive in moderation, but get it repaired soon: if the valve is stuck open, the engine may idle very poorly.

What causes code P213B?

The most common causes are: flap stiff or stuck from soot and oil deposits; worn gear train or weak actuator motor; implausible position feedback from the flap sensor.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.