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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 114 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0121-P0123, P0222, P0223, P16A0-P16A2, or P2135 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
5 V Reference P06A3 P0122*, P0222*, P16A0 P06A3 P0121, P16A2, P2135*
Serial Data P0122*, P0222*, P16A0 P0122*, P0222*, P16A0 P0123*, P0223*, P16A0**, P16A1**, P16A2** P0121, P16A2, P2135*
Low Reference - P0123*, P0223*, P16A1 - P0121, P16A2, P2135*
*This DTC sets when there is an internal component issue: Q38 Throttle Body
**A short to voltage causes P16A1 to set. If DTC P16A0, P16A1, P16A2 set at the same time, an intermittent circuit condition exists.
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