Question about 1991 Chevrolet Camaro
Coolant fan switch/sensor is located on passanger side of engine above the starter. It can only be seen from below.
Posted on Oct 08, 2008
Code 15=coolant temperature sensor
Posted on Aug 26, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
Trouble Code 15 indicates that the Coolant Temperature Sensor (CTS) is reporting abnormally low readings. CTS is used to control fuel mixture, timing, idle speed, TCC and EGR operation, among others. The thermistor used has a high-resistance when cold, lowering as the coolant warms.
Code 15 will set if:
- temperature reported is < -37.30 deg F (-38.5 deg C)
Typical causes may include:
1. Open circuit in CTS-ECM harness
2. Defective Coolant Temperature Sensor
3. Open sensor ground circuit
4. Defective ECM
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