Home › Volvo › 2009 › XC90 R-Design, AWD › Repair and Diagnosis › Engine Performance › System › Engine Control Module (ECM) Diagnostic Trouble Codes - 10 Of 13 › ECM-P02A868 Cylinder 4 Balance - Injector Restricted. Algorithm Based Failures. Event Information (B6324S5; 2011-2014) › Fault-Tracing Information