P316A

2B66 - P316A

Information saved in
DME

Fault code
2B66 - P316A

Fault text
Parallel connection, coolant temperature sensor

Fault description
Engine Coolant Temperature Signal Stuck High

Condition for fault identification
Test condition:
Following extended time, 600 min., with the vehicle parked
(K_TMOT_OBD_HIGH_TIME) the sensor still indicates a
high coolant temperature of 68 °C (K_TMOT_OBD_HIGH)
Terminal condition: B_ZUST_MS_A
&&
B_EMPF_ATEMP
Voltage condition:
none

Condition for fault memory entry
2000 ms

Action in service
1. Check plug and wiring harness,
2. Replace coolant temperature sensor

Fault effect and breakdown warning
Idle speed may be brielfy higher after engine start

Driver information
Warning light:
MIL

Service instruction
none