Your Toyota Alphard engine control system detects a problem, the computer stores the diagnostic trouble
code C1837 in its memory.
To figure out what is wrong with your vehicle you must first extract the C1837 DTC For Toyota Alphard.
C1837 Toyota Alphard engine problem can be occur defective fan clutches are a common and often overlooked cause of engine overheating. The shear characteristics of the clutch fluid gradually deteriorates over time, with an average loss in drive efficiency of about 200 rpm per year. Eventually slippage reaches the point where effective cooling is no longer possible and overheating results. (On average, the life of a fan clutch is about the same as a water pump. If one needs to be replaced, the other usually does too.)
C1837 Toyota Alphard DTC Meaning
Chassis Code - Problem is controller area network wiring bus and modules.
MFG - Manufacturer Specific
Accelerator Pedal Position (APP) Sensor 1 Performance
Low Coolant Circuit
Cruise Control System - Vehicle Accel Too High
If your vehicle failed a C1837 Toyota Alphard test and the C1837 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 C1837 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 C1837 DTC For Toyota Alphard: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.