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Home >> Nissan-Datsun >> 2012 >> Sentra Base, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1212 To P2A00 (MR20DE) (CALIFORNIA) >> DTC P1217: Engine Over Temperature >> Main 13 Causes of Overheating
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Main 13 Causes of Overheating

Engine Step Inspection item Equipment Standard Reference
OFF 1
  • Blocked radiator
  • Blocked condenser
  • Blocked radiator grille
  • Blocked bumper
 Visual No blocking -
2 Coolant mixture Coolant tester See , "ENGINE COOLING SYSTEM ".
3 Coolant level Visual Coolant up to MAX level in reservoir tank and radiator filler neck See , "INSPECTION ".
4 Radiator cap Pressure tester See ENGINE COOLANT .
ON(2) 5 Coolant leaks Visual No leaks See , "INSPECTION ".
ON(2) 6 Thermostat Touch the upper and lower radiator hoses Both hoses should be hot See THERMOSTAT , and WATER OUTLET AND WATER CONTROL VALVE
ON(1) 7 Cooling fan CONSULT Operating See trouble diagnosis for DTC P1217 ( "DIAGNOSIS PROCEDURE ").
OFF 8 Combustion gas leak Color checker chemical tester 4 Gas analyzer Negative -
ON(3) 9 Coolant temperature gauge Visual Gauge less than 3/4 when driving -
Coolant overflow to reservoir tank Visual No overflow during driving and idling See , "CHANGING ENGINE COOLANT ".
OFF(4) 10 Coolant return from reservoir tank to radiator Visual Should be initial level in reservoir tank See , "INSPECTION ".
OFF 11 Water control valve Remove and inspect the valve Within the specified value See WATER OUTLET AND WATER CONTROL VALVE
OFF 12 Cylinder head Straight gauge feeler gauge 0.1 mm (0.004 in) Maximum distortion (warping) See CYLINDER HEAD .
13 Cylinder block and pistons Visual No scuffing on cylinder walls or piston See CYLINDER BLOCK .
(1) Turn the ignition switch ON.
(2) Engine running at 3, 000 rpm for 10 minutes.
(3) Drive at 90 km/h (56 MPH) for 30 minutes and then let idle for 10 minutes.
(4) After 60 minutes of cool down time.

For more information, refer to OVERHEATING CAUSE ANALYSIS .

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