21732478 Volvo.Penta Rubber collar

Table 1
Event Code    
Code and Description     Conditions which Generate this Code     System
Response    
E841(1) Cyl #1 Exhaust Port Temp Deviating Low
E842(1) Cyl #2 Exhaust Port Temp Deviating Low
E843(1) Cyl #3 Exhaust Port Temp Deviating Low
E844(1) Cyl #4 Exhaust Port Temp Deviating Low
E845(1) Cyl #5 Exhaust Port Temp Deviating Low
E846(1) Cyl #6 Exhaust Port Temp Deviating Low
E847(1) Cyl #7 Exhaust Port Temp Deviating Low
E848(1) Cyl #8 Exhaust Port Temp Deviating Low
E849(1) Cyl #9 Exhaust Port Temp Deviating Low
E850(1) Cyl #10 Exhaust Port Temp Deviating Low
E851(1) Cyl #11 Exhaust Port Temp Deviating Low
E852(1) Cyl #12 Exhaust Port Temp Deviating Low
E853(1) Cyl #13 Exhaust Port Temp Deviating Low
E854(1) Cyl #14 Exhaust Port Temp Deviating Low
E855(1) Cyl #15 Exhaust Port Temp Deviating Low
E856(1) Cyl #16 Exhaust Port Temp Deviating Low
E857(1) Cyl #17 Exhaust Port Temp Deviating Low
E858(1) Cyl #18 Exhaust Port Temp Deviating Low
E859(1) Cyl #19 Exhaust Port Temp Deviating Low
E860(1) Cyl #20 Exhaust Port Temp Deviating Low     The cylinder exhaust temperature is lower than the average temperature for all of the cylinders. The amount of deviation has exceeded the trip point for the programmed delay time.     The code is logged.    
Table 2
Event Code    
Code and Description     Conditions which Generate this Code     System
Response    
E841(3) Cyl #1 Exhaust Port Temp Deviating Low
E842(3) Cyl #2 Exhaust Port Temp Deviating Low
E843(3) Cyl #3 Exhaust Port Temp Deviating Low
E844(3) Cyl #4 Exhaust Port Temp Deviating Low
E845(3) Cyl #5 Exhaust Port Temp Deviating Low
E846(3) Cyl #6 Exhaust Port Temp Deviating Low
E847(3) Cyl #7 Exhaust Port Temp Deviating Low
E848(3) Cyl #8 Exhaust Port Temp Deviating Low
E849(3) Cyl #9 Exhaust Port Temp Deviating Low
E850(3) Cyl #10 Exhaust Port Temp Deviating Low
E851(3) Cyl #11 Exhaust Port Temp Deviating Low
E852(3) Cyl #12 Exhaust Port Temp Deviating Low
E853(3) Cyl #13 Exhaust Port Temp Deviating Low
E854(3) Cyl #14 Exhaust Port Temp Deviating Low
E855(3) Cyl #15 Exhaust Port Temp Deviating Low
E856(3) Cyl #16 Exhaust Port Temp Deviating Low
E857(3) Cyl #17 Exhaust Port Temp Deviating Low
E858(3) Cyl #18 Exhaust Port Temp Deviating Low
E859(3) Cyl #19 Exhaust Port Temp Deviating Low
E860(3) Cyl #20 Exhaust Port Temp Deviating Low     The cylinder exhaust temperature is lower than the average temperature for all of the cylinders. The amount of deviation has exceeded the trip point for the programmed delay time.     The code is logged.
The engine is shut down.    If the engine is shut down due to a low exhaust temperature, the power to the ECM must be cycled in order to restart.Probable Causes
Monitoring system parameters
Inlet air restriction
Operation with a light load
Faulty thermocouple
Valve lash settings
Low cylinder compressionRecommended Actions
Monitoring System Parameters
Ensure that the monitoring system parameters for the exhaust temperature module are set correctly. Ensure that the monitoring system parameters for the exhaust port temperatures are set correctly. Refer to Troubleshooting, "Event Codes" for information that relates to the default parameters, ranges, and delay times of the monitoring system parameters that are for the exhaust port temperatures.Inlet Air Restriction
Inlet air restriction can cause uneven exhaust port temperatures. Cylinders at the front half of the engine may have exhaust port temperatures that are lower than the exhaust port temperatures for the cylinders at the rear half of the engine by 10 to 20 °C (18 to 36 °F).Measure the inlet air restriction for each turbocharger. If an imbalance in the system is discovered, make repairs in order to equalize the inlet air restriction for each of the turbochargers.Operation with a Light Load
Operation with a low load can result in low exhaust temperatures. Operate the engine at low idle or near low idle in order to identify a misfire problem.Troubleshoot the cause of the misfire. Refer to Troubleshooting, "Engine Misfires, Runs Rough or Is Unstable".Faulty Thermocouples
Observe the temperatures from the thermocouples after the engine is shut off.When the engine is operating properly, the temperatures from similar locations are reduced at a similar rate. Also, the temperatures from similar locations are comparable.If any discrepancies are found, switch the suspect thermocouple for another thermocouple. If the temperature problem follows the thermocouple, replace the suspect thermocouple.If the temperature problem stays at the original location of the suspect thermocouple, investigate the cause for the low temperature.
Investigate for grounded thermocouples or DC voltage present between the cylinder block and -Battery connection, if temperatures are grossly inaccurate. An example would be if a thermocouple reads −70° C (−94° F). Disconnect all of the thermocouples and reconnect one thermocouple at a time to check individually while viewing the display panel. When DC voltage is present on the block, locate the source of the voltage. One possible source of voltage is an improperly grounded battery charger.Valve Lash Settings
Check the valve lash settings for the valves on the engine. Refer to Systems Operation/Testing and Adjusting, "Valve Lash - Adjust" for information that is related to adjusting the valve lash for the engine.Low Cylinder Compression
Measure the cylinder pressures of the suspect bank in order to check for problems that are related to compression.If low cylinder compression is found, investigate the cause of the low compression. Perform the necessary repairs.