DTC P2138:00 [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSES

DTC P2138:00	APP sensor No. 1/No. 2 voltage correlation problem
DETECTION CONDITION	The PCM compares the input voltage from APP sensor No. 1 with the input voltage from APP sensor No. 2 when the engine is running. If the difference is more than the specification, the PCM determines that there is an APP sensor No. 1/No 2 angle correlation problem. Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	APP sensor connector or terminal malfunction APP sensor No 1 malfunction APP sensor No. 2 malfunction PCM connector or terminal malfunction PCM malfunction

DTC P2138:00

APP sensor No. 1/No. 2 voltage correlation problem

DETECTION CONDITION

The PCM compares the input voltage from APP sensor No. 1 with the input voltage from APP sensor No. 2 when the engine is running. If the difference is more than the specification, the PCM determines that there is an APP sensor No. 1/No 2 angle correlation problem.

Diagnostic support note

This is a continuous monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
FREEZE FRAME DATA is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

APP sensor connector or terminal malfunction
APP sensor No 1 malfunction
APP sensor No. 2 malfunction
PCM connector or terminal malfunction
PCM malfunction