U1129 Code - U1129 DTCCheck U1129 definition,symptoms,causes,repair process and diagnose ways.
When your check engine light comes on and after checking with OBD scanner for the code comes with U1129 so :
DTC U1129 Definition:
U1129 code refers to problem in U1129 SCP (J1850) Invalid or Missing Data for Primary Id.
General Symptoms :
When the check engine light comes on for U1129, you will notice at least one of the following symptoms:
- Decreased fuel efficiency
- Some other codes might be stored
- At times, the engine may enter limp home mode
- Rich or lean running of the engine solely on bank 1.
- Other HV Battery related codes
What causes this problem with the U1129 SCP (J1850) Invalid or Missing Data for Primary Id?
- Blown head gasket
- Damaged coolant temperature sensor.
- The exhaust manifold, flex hose, downpipe, and other exhaust components might be leaky.
- Fuel mixture might be inappropriate.
- Bad spark plugs
- MAF sensor
How to diagnose U1129 code ?
You can diagnose before where they hook the car up to a scanner, find a fault code and then tell you what is probably wrong with the car.
You will verify the code with an OBD-II scanner, then you should reset the code and road test the vehicle to determine if the Check Engine Light comes back on and if the U1129 code returns.
OBDII (DTC) Diagnostic Trouble Codes
For more detailed dtc fault data please select your code below.
4 different DTC codes are listing :
Read The Codes:
With so many moving parts, there are countless fault codes that tell you what needs attention on your vehicle. Your OBD system detects faults in your car and displays a trouble code that tells you and your mechanic what needs service in order to get your vehicle back on the road. P,U,B and C codes there is totally 52.000 .
Only a qualified trained service technician equipped with the correct diagnostic and repair equipment can perform OBD-related repairs. Vehicle owners should ask their vehicle repair facility if the technicians have received proper training and have access to the necessary equipment to properly service OBD-equipped vehicles.