Fault Code P0668
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0668
ECM/PCM Internal Temperature Sensor 'B' Circuit Low
This code indicates a lower than normal voltage in the ECM/PCM's internal temperature sensor 'B' circuit. Low voltage can cause incorrect temperature readings and affect engine performance.
Part Details
Part Name
Internal Temperature Sensor 'B'
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1200
Engine Location
Inside ECM/PCM
Symptoms
- Check Engine Light on
- Rough engine operation
- Sudden engine stall
- Abnormal fuel consumption
Possible Causes
- 1Short to ground in wiring
- 2Damaged wiring in the sensor circuit
- 3Faulty internal temperature sensor
- 4PCM/ECM malfunction
AI Smart Part Finder
The AI will search where to buy part number N/A online and display suppliers, prices, and availability estimates.
Purchase Internal Temperature Sensor 'B' Online
P/N: N/A — Search and purchase the part from the following sites:
eBay
New and used spare parts
Amazon
Fast shipping available
AliExpress
Low prices and free shipping
RockAuto
Professional auto parts store
AutoDoc
Spare parts from Europe
Spareto
OEM and aftermarket parts
Cars245
European parts at good prices
AlfaWorkshop
Professional parts and accessories
Google Shopping
Compare prices from all stores
We may earn a commission from purchases through these links, at no extra cost to you. Details