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DTC › ESTA1 ESTA1 / 0278

ECU SPI bus communication error

â–¶ How to fix

• Other electric truble codes related to NMS, DLS and CDS should be ignored until ECU been replaced • Replace ECU. • After ECU replacement there should not be any electric fault trouble codes redetected.

What you'll see

• False detection of electric errors on NMS, DLS or CDS may occur. Red Warning and system degradation according to electric trouble codes.

System reaction

Yellow Steer tag axle fault wa

Diagnostic depth

Detection

Internal diagnostic software on eSwich ports detected communication error on SPI bus.

Possible cause

Internal ECU hardware or software error.

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