P1129 — Downstream Heated O2 Sensors Swapped
Severity: Warning
Can you drive? With caution: limp mode possible, have it checked soon
Make: All makes (OBD-II standard)
| Meaning | Downstream Heated O2 Sensors Swapped. |
| Family | Powertrain (P) |
Frequently asked questions
What does code P1129 mean?
Downstream Heated O2 Sensors Swapped. Downstream Heated O2 Sensors Swapped.
Can I keep driving with code P1129 active?
With caution: limp mode possible, have it checked soon
How do you fix code P1129?
Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.
Need help with this fault?
We are ECU specialists: diagnosis, file repair and remapping for cars, bikes, trucks and agricultural vehicles.
Contact us
Where to get it fixed
Related codes
- P1100 — MAF Sensor Intermittent/ Check of all OBDII Systems Not Comp...
- P1101 — MAF Sensor Out Of Self Test Range./KOER Not Able To Complete...
- P1102 — MAF Sensor In Range But Lower Than Expected
- P1103 — MAF Sensor In Range But Higher Than Expected
- P1104 — MAF Ground Malfunction
- P1105 — Dual Alternator Upper Fault
- P1106 — Dual Alternator Lower Fault/ Manifold Absolute Pressure (MAP...
- P1107 — Dual Alternator Lower Circuit Malfunction/ Manifold Absolute...
- P1108 — Dual Alternator Battery Lamp Circuit Malfunction
- P1109 — IAT - B Sensor Intermittent
- P1110 — IAT Sensor (D/C) Open/Short
- P1111 — Intake Air Temperature (IAT) Sensor Circuit Intermittent Hig...