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DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P00DD
P00DD means the powertrain control module (PCM) has detected an intermittent or erratic signal from the ambient air temperature (AAT) sensor circuit B, which is the second AAT sensor on vehicles that use more than one. The PCM expects a steady voltage or data message that changes smoothly with outside temperature, and it flags this code when the signal jumps, drops out, or behaves unpredictably.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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