Code classification
What this reference means
The control module recorded a condition matching Exhaust Gas Recirculation Flow Insufficient Detected. This identifies the monitored condition, not a guaranteed failed part. Software version, operating conditions and related codes must be considered together.
Monitored system: Exhaust-gas recirculation flow monitoring
Possible symptoms
- Malfunction indicator lamp
- Reduced torque or altered response on some vehicles
- Combustion noise or emissions-related symptoms depending on platform
Possible causes to investigate
- Restricted EGR passages or cooler
- Valve or actuator movement fault
- MAF/MAP plausibility problem
- Intake, charge-air or exhaust leak
- Wiring, supply, position-sensor or vacuum-control fault
- Software or adaptation mismatch after an incomplete repair
A list of possible causes is not a parts-replacement instruction. Test the circuit and system under the code's enabling conditions.
Workshop diagnostic sequence
- 01
Record freeze-frame and all air-path, boost and EGR-related codes.
- 02
Command the EGR system with a suitable diagnostic tool and observe position plus airflow response.
- 03
Inspect passages, cooler, linkage, vacuum or electronic actuator operation.
- 04
Check MAF/MAP plausibility and intake/charge-air leaks.
- 05
Verify wiring, power, ground and position feedback under load.
- 06
Repair the root cause and repeat the monitor's enabling conditions.
Related technical context
Compliance
Safety and emissions-related faults must never be hidden on a road vehicle. Diagnose and repair the root cause. Required OBD and emissions systems must remain operational where the applicable law requires them.