C0812 Mercedes-Benz Auto Trouble Code
C0812 Mercedes-Benz OBD2 may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.
The crank but won't start condition, along with the trouble codes may make you think you've got a PATS anti-theft system problem. However, Ford reports that these codes are all related to software bugs. The only way around the problem is to reprogram the PCM with the latest software.
C0812 Mercedes-Benz Possible Solution:
Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.
C0812 Mercedes-Benz Description For All Models :
- Mercedes-benz 130
- Mercedes-benz 14
- Mercedes-benz 15
- Mercedes-benz 150
- Mercedes-benz 170
- Mercedes-benz 180
- Mercedes-benz 190
- Mercedes-benz 200
- Mercedes-benz 219
- Mercedes-benz 220
- Mercedes-benz 230
- Mercedes-benz 240
- Mercedes-benz 250
- Mercedes-benz 260
- Mercedes-benz 280
- Mercedes-benz 290
- Mercedes-benz 300
- Mercedes-benz 320
- Mercedes-benz 350
- Mercedes-benz 38
- Mercedes-benz 380
- Mercedes-benz 400
- Mercedes-benz 420
- Mercedes-benz 450
- Mercedes-benz 500
- Mercedes-benz 540
- Mercedes-benz 560
- Mercedes-benz 600
- Mercedes-benz 770
- Mercedes-benz A Class
- Mercedes-benz B Class
- Mercedes-benz Bionic
- Mercedes-benz C Class
- Mercedes-benz C111
- Mercedes-benz Ck Class
- Mercedes-benz Cl Class
- Mercedes-benz Clc Class
- Mercedes-benz Clk Class
- Mercedes-benz Cls Class
- Mercedes-benz Concept
- Mercedes-benz Cw
- Mercedes-benz E Class
- Mercedes-benz F Class
- Mercedes-benz G Class
- Mercedes-benz Gl Class
- Mercedes-benz Glk Class
- Mercedes-benz M Class
- Mercedes-benz Mcc
- Mercedes-benz Ml Class
- Mercedes-benz Ponton
- Mercedes-benz R Class
- Mercedes-benz S
- Mercedes-benz S Class
- Mercedes-benz Sc Class
- Mercedes-benz Sl Class
- Mercedes-benz Slk Class
- Mercedes-benz Slr Class
- Mercedes-benz Smart
- Mercedes-benz Sprinter
- Mercedes-benz Swatch
- Mercedes-benz T Class
- Mercedes-benz V Class
- Mercedes-benz Vaneo
- Mercedes-benz Viano
- Mercedes-benz Vision
- Mercedes-benz Vito
- Mercedes-benz W110
- Mercedes-benz W111
- Mercedes-benz W123
- Mercedes-benz W136
- Mercedes-benz W196
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C0812 Mercedes-Benz Trouble Repair :
If your vehicle failed a C0812 Mercedes-Benz test and the C0812 Mercedes-Benz Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature. |
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