Lack Of HO2S Switch - Adaptive Fuel At Limit
P1130 — Lack Of HO2S Switch - Adaptive Fuel At Limit
System: Powertrain | Type: Manufacturer-Specific | Make: Generic
P1130 is a manufacturer-specific powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.
Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.
P1130 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.
This code is set when the powertrain control module (PCM) detects that the upstream heated oxygen sensor (HO2S) is not switching between rich and lean conditions as expected. The PCM relies on the HO2S signal for fuel trim adjustments, and if the sensor remains stuck in one state for too long, it indicates a problem with the sensor, fuel system, or air intake system.
Detailed possible causes for P1130 are available to TaT members.
Unlock with Free TrialStep-by-step diagnostic guidance for P1130 is available to TaT members. Our Diagnostic Assistant provides professional-level troubleshooting procedures written by experienced technicians.
Unlock with Free Trial| Code | P1130 |
| System | Powertrain |
| Type | Manufacturer-Specific |
| Make | Generic |
| Causes | Available |
| Diag. Assistant | Available |
| Video | — |
Get complete diagnostic info, causes, and repair guidance.
Start Free 7-Day Trial Member LoginSearch all 8,602 fault codes with complete diagnostic details, possible causes, and repair guidance.
Start Your Free 7-Day Trial Member Login© 2026 The Automotive Technician (TaT) — www.tat.net.au