B107D Engine Trouble Code
What is B107D?
The B107D check-engine light can indicate issues ranging from minor (loose gas cap) to serious (catalytic converter failure). Professional diagnostic scanning at a dealer or shop will identify the exact cause and required repairs.
Code Information
| Code Type: | OBD-II Body (B) Trouble Code |
| System: | Body |
| Code: | B107D |
B107D Symptoms
Check Engine Light
Illuminated dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration
Starting Problems
Difficulty starting the engine
B107D Code Structure
Understanding what each digit means in the B107D body trouble code:
| B | 1 | 0 | 7 | d |
|---|---|---|---|---|
| Body Code | Fuel And Air Metering | Ambient Air Temperature Sensor Circuit Low | Cylinder 10 Contribution/Balance Fault | System Malfunction |
How to Fix B107D
Diagnostic Steps:
Check if fuel pump primes when key is turned to ON. Measure fuel pressure and verify bright white-blue spark at all plugs. Also verify mechanical timing alignment.
Repair Solution:
Power steering pressure switch monitors system operation. If pressure changes are not detected after calibrated speed transitions, this DTC sets. Verify PSP switch operation and check for circuit opens or shorts.
Technical Notes:
B107D DTCs can be triggered by upstream issues. For example, a dirty MAF sensor may cause incorrect fuel-trim adjustments, leading oxygen sensors to report mixture problems. Address root causes first.
B107D Description
B107D engine trouble code is related to System Malfunction.
Main Cause
The primary reason for B107D OBD-II Engine Trouble Code is: Ambient Air Temperature Sensor Circuit Low.