B1133 Engine Trouble Code
What is B1133?
B1133 code can indicate a faulty oxygen sensor, which may eventually damage the catalytic converter (repair cost: $2,000–$2,200). Professional diagnosis costs around $200–$210. Oxygen sensors are often straightforward to replace — check your owner's manual for location and instructions. This issue should be addressed promptly to prevent further damage.
Code Information
| Code Type: | OBD-II Body (B) Trouble Code |
| System: | Body |
| Code: | B1133 |
B1133 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
B1133 Code Structure
Understanding what each digit means in the B1133 body trouble code:
| B | 1 | 1 | 3 | 3 |
|---|---|---|---|---|
| Body Code | Fuel And Air Metering | Fuel Rail/System Pressure — Too High | Injection Pump Fuel Metering Control 'A' High | Exhaust Gas Recirculation Sensor B Circuit High |
How to Fix B1133
Diagnostic Steps:
Regarding B1133, carefully inspect the wire harness near the intake manifold bracket, best accessed from below near the oil filter. Look for chafing, pinching, or damaged insulation.
Repair Solution:
Verify all electrical connections are clean and tight. Check for damaged wiring, especially in high-heat or high-vibration areas. Use manufacturer wiring diagrams for accurate diagnosis.
Technical Notes:
B1133 on electronically controlled automatic transmissions relates to shift solenoid operation. The solenoid actuates hydraulic circuits controlling clutches or bands for gear changes.
B1133 Description
B1133 engine trouble code is related to Exhaust Gas Recirculation Sensor B Circuit High.
Main Cause
The primary reason for B1133 OBD-II Engine Trouble Code is: Fuel Rail/System Pressure — Too High.