P2D21

Turbocharger Interstage Pressure Sensor A Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Rough engine operation
Check Engine Light Illuminates
Acceleration problems

Causes

Turbocharger pressure sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
Engine control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Inspect the connectors and contacts of the sensor
Check sensor resistance
Replace pressure sensor if necessary
Scan the control unit for other errors

Related codes

P2D22 P2D20 P0045