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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 2.5L (LCV) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P157A or P16D7-P16D9 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P157A 

The difference between the following parameters is greater than a predefined value:

P16D7 

Sensor Supply Voltage Relay Control Circuit = Open - For greater than 1 s

P16D8 

Sensor Supply Voltage Relay Control Circuit = Short to Ground - For greater than 1 s

P16D9 

Sensor Supply Voltage Relay Control Circuit = Short to Voltage - For greater than 1 s

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