P1057 Diagnostic Trouble Code (8 interpretations)

The control module detected that the air-fuel mixture stayed leaner than the target despite full corrective control (Post catalytic convertor fuel trim (FT), bank 1). This is the manufacturer-specific definition used by BMW.

The control module detected that the signal in the Heated oxygen sensor (HO2S) 2, bank 1 circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Dodge.

The control module detected a fault associated with the Valvetronic Relay Activation circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by MINI.

The control module detected a short circuit to ground in the Variable valve lift relay control fault circuit. Documented for the Bosch MED 17.4.x engine ECU (EP6 THP family) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

The control module detected a short circuit to ground in the Fault in the variable valve lift system circuit. Documented for the Bosch MEV17.4 engine ECU (EP6 1.6 VTi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

The control module detected a short circuit to battery voltage in the Variable valve gear solenoid valve command circuit. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models.

The control module detected an interruption (open circuit) in the Bank 1 Camshaft Adjustment Short To circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

The control module detected an interruption (open circuit) in the Bank 1 Camshaft Adjustment Short To circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen.