240 L4-2320cc 2.3L SOHC VIN 83 B230FD (1993)
EGR Valve: Testing and Inspection
Diagnostic Procedures, NTC Type Sensors
FK DIAGNOSTIC TROUBLE CODE (DTC) 4-1-3 EZ 116 K (NTC)
* 4-1-3 Exhaust Gas Recirculation (EGR) temperature sensor signal absent or faulty (NTC)
EGR system with an NTC type temperature sensor
Model 244 cars chassis numbers from 467580 onwards and 245 models chassis numbers 923449 onwards are fitted with NTC type EGR temperature
sensors at the factory. Cars with lower chassis numbers were fitted with PTC type EGR temperature sensors.
DTC Conditions
The control module uses the signal from the EGR temperature sensor to determine whether there is an EGR flow or not. If the control module receives a
signal which is too high, too low or faulty (the temperature sensor signal changes when the control module is not sending an EGR flow), a DTC is
logged.
Causes of fault:
-Faulty temperature sensor (break or short circuit in the sensor)
-Break in the signal wiring
-Signal wiring grounded
-Break in the wiring to GND
-Short circuit
-Intermittent loose contact
NOTE: Be careful when removing yellow and white hoses. The hoses may burst or crack if they are removed roughly from nipples.
FK1
Checking and cleaning the EGR temperature sensor connector
