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Mode 21 information

Warning: This information might not be complete or correct. Use at your own risk.

Payload ByteBitInformationConversionRange
011-8Number of DTC's0-255
213Fuel pump running0-1
218Speed > 0km/h0-1
232EGR on0-1
233Tank ventilation on0-1
261CEL on0-1
321-8Battery voltageA/100-25.5V
33+341-16Engine RPM((A*256)+B)/40-16383rpm
371-8Vehicle speedA0-255km/h
391-8Engine coolant temperature sensorA * 0.019531250-5V
401-8Engine coolant temperatureA - 40-40° - 215°C
411-8Air intake temperature sensorA * 0.019531250-5V
421-8Air intake temperatureA - 40-40° - 215°C
471-8Manifold air pressure sensorA * 0.019531250-5V
481-8Manifold air pressureA0-255kPa
491-8Accelerator pedal position sensor 1A * 0.019531250-5V
501-8Accelerator pedal position sensor 2A * 0.019531250-5V
531-8Throttle valve position sensor 1A * 0.019531250-5V
541-8Throttle valve position sensor 2A * 0.019531250-5V
561-8Throttle valve commanded positionA * 100/2550-100%
581-8EGR valve commanded positionA * 100/2550-100%
591-8EGR valve sensorA * 0.019531250-5V
611-8Tank ventilation commanded positionA * 100/2550-100%
671-8Ignition timingA/2 - 64 -64° - 63.5°
831-8Short term fueltrim0.7812 * (A - 128)-100 - 99.22%
851-8O2 sensor 1A * 0.005 0 - 1.275V
861-8O2 sensor 2A * 0.005 0 - 1.275V
891-8Long term fueltrim0.7812 * (A - 128)-100 - 99.22%