Cadillac P1551: Secondary Or Primary Fuel Level Sensor Malfunction
Is your scanner showing Cadillac P1551?
No worries. We'll show you what it means and how to deal with it.
Cadillac P1551: Secondary Or Primary Fuel Level Sensor Malfunction
OVERVIEWWhat Does The Cadillac P1551 Code Mean?
Key on, engine speed less than 40 rpm, ECT sensor from 41-212ºF, IAT sensor over 41ºF, system voltage over 10v, APP sensor signal under 15%, and the PCM detected the throttle blade was at “rest” position with the TP angle under 2.1% or over 9.8%.
What Are The Potential Causes Of The Cadillac P1551 Code?
- TAC motor circuit (one or more) shorted to ground
- Throttle valves not in a “rest’ position due to stuck open/closed
- Throttle valves moving open or closed without spring pressure
- Throttle body assembly is damaged or it has failed
- PCM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> HOWYAA HVE72A Electronic Fuel Injection Throttle Body Assembly for 07-11 Cadillac
>>> GM Genuine Parts 12633238 Engine Control Module
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Cadillac P1551, DTCDECODE.
