Lexus ES: Engine Circuit Malfunction (C1280)
DESCRIPTION
If a malfunction in the ECM circuit occurs, the 4WD ECU assembly will output this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
| C1280 | Engine Circuit Malfunction | When the following continues for 5 seconds or more: -
Communication with ECM is operating normally, but engine control system is malfunctioning.
| -
Engine control system
-
4WD ECU assembly
|
PROCEDURE
| 1. | CHECK FOR DTC (ENGINE CONTROL SYSTEM) |
(a) Check if the engine control system DTC is output.
Powertrain > Engine > Trouble Codes
| Result | Proceed to |
| Engine control system DTC is not output | A |
| Engine control system DTC is output | B |
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