P2142

EGR Throttle Control Circuit A High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Unstable engine idling
Increased fuel consumption
Dips during acceleration

Causes

Open or short circuit in the EGR throttle control circuit
EGR throttle malfunction
Connector problems or contact corrosion
Engine control unit (ECU) malfunction
Wiring harness damage

How to Fix

Check the integrity of the EGR throttle control circuit
Inspect connectors and contacts for corrosion or damage
Check resistance and operation of the EGR throttle valve
If necessary, replace the EGR throttle
Check and, if necessary, replace damaged wires

Related codes

P0401 P0402 P0403 P2141