DTC P0880: TCM Power Signal Error Open/Short (GND): DTC Detecting Condition

P0880 TCM POWER SIGNAL ERROR OPEN/SHORT (GND)

Item		Detecting Condition	Possible Cause
DTC Strategy		Check voltage range	Battery fuse Open circuit Battery to TCM Battery Alternator
Enable Conditions	CASE 1	Engine speed or Input speed > 1400rpm Shift position level: N or P or Engine speed > 500rpm Shift position level: N or P
	CASE 2	Engine speed or Input speed > 1400rpm Shift position level: N or P or Engine speed > 500rpm Shift position level: N or P
	CASE 3	Engine speed > 400rpm
Threshold Value	CASE 1	ATF 70°C : Battery voltage < 7V ATF 140°C : Battery voltage < 8.4V
	CASE 2	Battery voltage < 9V
	CASE 3	Battery voltage > 16V
Diagnostic Time	CASE 1	0.05 second
	CASE 2	2.5 second
	CASE 3	2.5 second
Fail Safe		High speed : fixed at 5th gear, low speed : fixed at 3rd gear. Reverse : Shift lock (Push "Unlock button → possible to shift) (priority :3)

CAUTION:

The function with the higher priority will always take precedence. However, a low-priority is not overruled by a higher priority function.
Functions from different priority categories can also run in parallel. It is important to note which function will take precedence in this case.
In such an event it is possible for a substitute function with low priority not be carried out if a second, higher-priority function is present. This has been taken into account when compiling the priority list and is international.
The mechanical emergency run function must always have the highest priority, since from the electrical standpoint it is the only safe condition.