Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Exhaust gas recirculation temperature (EGRT) sensor - low input
Cause:
    Wiring short to ground, EGRT sensor

Ford
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    EGR Flow Out of Self-Test Range Conditions
Cause:
    Engine running, then the PCM detected an insufficient amount of EGR system flow (valve stuck closed)

Mazda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Exhaust gas recirculation (EGR) system - no flow detected
Cause:
    Wiring, EGR solenoid valve, mechanical fault

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Exhaust gas recirculation temperature (EGRT) sensor - low input
Cause:
    Wiring short to ground, EGRT sensor