DTC P0122:00: Notes

DTC P0122:00 (LF, L5) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0122:00	TP sensor No. 1 circuit low input
DETECTION CONDITION	If the PCM detects that the TP sensor No. 1 voltage is below 0.2 V while the engine is running, the PCM determines that the TP sensor circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction conditions in first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Throttle body connector or terminals malfunction Short to ground in wiring harness between throttle body terminal A and PCM terminal 2AK PCM connector or terminals malfunction Open circuit in wiring harness between throttle body terminal B and PCM terminal 2AR Short to ground in wiring harness between throttle body terminal B and PCM terminal 2AR TP sensor No. 1 signal circuit and ground circuit are shorted to each other TP sensor No. 1 malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.