What Does U1075 Mean?
The module cannot receive valid engine oil temperature data over the SCP network. The PCM or dedicated oil monitoring module is not transmitting oil temperature information properly.
Common Causes
40%
Failed engine oil temperature sensor or open circuit
25%
PCM not broadcasting due to invalid sensor reading
18%
SCP communication bus fault affecting oil temperature data
12%
Receiving module failure (instrument cluster or HVAC)
5%
Connector corrosion at oil temperature sensor
Diagnostic Steps
1
Step 1: Check for oil temperature sensor codes (P0195-P0199) in PCM
2
Step 2: Monitor oil temperature reading in PCM live data and compare to expected values based on engine temperature
3
Step 3: Test oil temperature sensor resistance and compare to temperature specification chart
4
Step 4: Inspect oil temperature sensor location for oil leaks or connector damage
5
Step 5: Verify SCP bus is carrying oil temperature data packets using advanced scan tool
Estimated Repair Cost
$120 - $650
Parts + labor, varies by vehicle and location
The module cannot receive valid engine oil temperature data over the SCP network. The PCM or dedicated oil monitoring module is not transmitting oil temperature information properly.
The most common cause of U1075 (SCP (J1850) Invalid or Missing Data for Engine Oil Temp) is: Failed engine oil temperature sensor or open circuit
Typical repair costs for U1075 range from $120 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of oil temperature monitoring may prevent detection of abnormal oil heating conditions. Generally less critical than oil pressure monitoring but important for engine longevity.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1075 to identify the root cause.
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Quick Info
Category
Network
System
Engine Lubrication / Communication Network
Difficulty
Type
Manufacturer
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