B0257 Peugeot 307 OBD Code

OBD/2 B0257 error code description and symptoms.

Variable Cam Timing Over-advanced (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for an over-advanced camshaft timing.
The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. Cam timing improperly set No oil flow to the VCT piston chamber Low oil pressure VCT solenoid valve stuck closed Camshaft advance mechanism binding (VCT unit) B0257 DTC is a check of the VCT unit.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

B0257 Peugeot 307 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine B0257 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If exhaust pressure control valve high so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the exhaust pressure control valve high.

Common Causes of Peugeot 307 B0257 OBD2 Code

A common cause of code B0257 is the failure of Exhaust Pressure Control Valve High, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Camshaft advance mechanism binding (VCT unit)
Incorrect Positive Crankcase Ventilation (PCV) hose connection
Faulty Fuel injector

B0257 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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B0257 Peugeot 307 OBD Code

B0257 Peugeot 307 Error Code Repair Process :

Common Causes of Peugeot 307 B0257 OBD2 Code

B0257 code for other Peugeot cars