P1257

P1257

Diagnosis information - Control unit DME (DFI)

Adjustment range Boost pressure adjuster Bank 2
(Electronic adjuster for turbocharger)

Diagnostic conditions
- Ignition on, then :
- Switch off ignition
- Switch on ignition

Possible fault causes
- Turbocharger not adapted after replacement
- Electronic adjuster for turbocharger no or incorrect basic setting/adaptation
- Electronic adjuster for turbocharger stiff / Faulty
- Connecting rod broken / detached / blocked (Electronic adjuster for turbocharger - Turbocharger)
- Turbocharger stiff / jammed

Fault setting condition(s)
- The electronic adjuster reports that the current adjustment range for the boost pressure adjuster deviates from the adjustment range as programmed during adaptation (it is exceeded or dropped below).

Fault effects
- Boost pressure control switched off (Boost pressure low)
- Reduction Engine torque