2008 Cadillac DTS 4.6L MIL Lamp on
Have not found much diagnostic information on this code. Checked EGR for being partially stuck open but could blow from exhaust side and pintle sealing tightly/no air.
FIX posted 2/19/2015
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Message Closed w/FIX
Vehicle Data2008 Cadillac DTS
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2008 Cadillac DTS
VIN | 1G6KD57Y68 |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Cold |
Trouble Codes
P1400 | Manifold Differential Pressure Sensor Circuit Malfunction |