P140C Diagnostic Trouble Code Discussion for September 2021
EGR slow response decreasing flow
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| Help Request | Posted | |
| 2011 Chevrolet Silverado 2500 HD LTZ 6.6L MIL Lamp on VIN: 1GC1KYC86B P140C: EGR slow response decreasing flow. ... this is one customer we make exceptions for. It has a code P140c for low EGR flow. We commanded the valve open up to 40%, that is the limit of our Snap on scanner. Desired and actual values showed the same. Engine did not run any differently. We remov... |
September 16, 2021 |
