The engine wiring harness may be rubbing on the edge of the battery tray on some 2016-2018 Malibu models equipped with the 1.5L engine (RPO LFV). As a result, the Check Engine MIL may be illuminated.
The harness is a multi-bundled harness and damage to one of the wires may set a variety of DTCs. One or more of the following DTCs may be set: P0089, P0101, P0121, P0236, P0237, P0336, P0557, P057C, P0575, P057E, P0641, P0651, P0700, P1101, P15F6, P15FD, P16E4, P2227, P2230, P2544, P3051, U0014, U0073, U0101, U0121, U0140, U1814, U18A7. Due to the position of the wires in the engine harness, it is unlikely that more than one circuit or fuse will be affected by the condition.
Check the engine wiring harness conduit and wires for any chafing on the edge of the battery tray. (Fig. 33) Repair the wires as instructed in the appropriate Service Information.
Fig. 33
Use woven Polyester Electrical Tape (PET) to tape all contact points of the engine harness. Apply the tape in a double layer, extending along the engine harness past the battery tray. Once the harness is taped, use tie straps to positon the harness away from the battery tray.
– Thanks to Calvin Kohring
