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Info guides and mods

Specific Error Codes

Modification Details




OK, this is a massive work in progress that I hope others will be able to help with.

OBD error codes are easy to ready with a cheap 
OBD error reader but the resulting codes 
don't always point towards the problem. So, the idea here is this. If you had an error 
code and know exactly what was faulty to bring up the code, let me know.

Specific Codes And Faults

Fortwo 451

PO410 Secondary mixing valve failure. 
Link to more info. (Paul M).

Fortwo 450 & Roadster

PO112
IAT sensor reading too hot, voltage low (Tyrel).
PO113 IAT sensor reading too cold, voltage high (Tyrel).
P2046 MAP sensor faulty or boost leak, check air inlet manifold and turbo to engine.

P2359 Boost too high. MAP sensor faulty, wastegate seized, wastegate arm off,
wastegate actuator pipe off or cycle valve faulty.

P2034 Gear selector lever (SE Drive) failure.
P2022 Clutch system error
P202A Gear not shiftable on closed clutch.

450 & 451 Diesel

P0401 EGR valve low flow (not fully opening).
P0409 EGR solenoid probably stuck/seized.
P0380P1481 Glow plug failure.
P1400 Boost sensor fault

How Can I Help?

If you know an error code and a fix then contact me. If you have a code reader,
why not disconnect something like a sensor and let me know the error code.
		451 CDI Specific Codes

SAM Unit

			B1430 Short circuit Engine fan 
B1440 Short circuit AC compressor  
B1451 Component E15/4 (Front interior lamp) or line to component has short circuit.  
B1452 Component Ambiance lighting or line to component has short circuit. ( LED )  
B1453 Component Ambiance lighting or line to component has short circuit. ( Footwell lighting )  
B1709 Write process to EEPROM is faulty.  
B1710 ROM: read error  
B1720 Batteries in key are empty or wrongly inserted.  
B1721 Immobilizer : Base station error  
B1722 Immobilizer : Antenna error  
B1723 Immobilizer : Transponder communication error detected  
B1725 Activation of immobilizer failed due to data error .  
B1726 Immobilizer : Immobilizer counter overflow 
B1728 Undervoltage supply B1729 Overvoltage supply 
B1730 The remote control key is not synchronized. 
B1731 Immobilizer : Communication fault 
B1732 Immobilizer : Short circuit to ground 
B1733 Immobilizer : Short circuit to positive 
B1740 Right turn signal lamp defective 
B1741 Left turn signal lamp defective 
B1761 VIN is not written in control unit N10/10 (SAM control unit).  
B1780 Kilometer reading : Implausible value  
B1781 Mileage of instrument cluster a mileage of control unit N10/10 (SAM control unit)  
B2215 Internal fault in component N10/10 (SAM control unit): 
D601 Error during programming of the function software. Remedy : Perform initial startup. 
U1100 No or incorrect CAN message from control unit Engine control module  
U1101 No or incorrect CAN message from control unit Transmission  
U1102 No or incorrect CAN message from control unit N47-5 (ESP control unit)  
U1108 No or incorrect CAN message from control unit Al (Instrument cluster)  
U1112 No or incorrect CAN message from control unit N2/7 (Restraint systems control unit)  
U1113 The terminal 15 signal on the CAN bus is missing or is faulty.  
U1414 Implausible signals from component Terminal 58d  
U1503 LIN bus error 
 

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