Traditional gasoline car fault
Search fault code and browse forum case posts.
This page is designed for quick diagnosis on gasoline vehicles by combining code lookup with real discussion cases. Enter a fault code to filter related topics, then compare symptom context such as cold start behavior, acceleration load, fuel-trim deviation, ignition misfire pattern, and recent maintenance history. Many codes can be triggered by shared root causes, so use cross-checks from multiple posts before replacing sensors, coils, injectors, or catalytic components.
2005 GMC Canyon SLE P1133 and P0136 O2 Sensor Codes - Rough Idle at Warmup, 550 RPM
Hi everyone. My 2005 GMC Canyon SLE has started idling roughly once it reaches operating temperature, with the engine running around 550 RPM. The check engine light has been on ...
2005 GMC Canyon SLE | P01362004 Chevy Trailblazer O2 Sensor P1133 Fault: Downstream Sensor Replacement Not Resolving Code
I own a 2004 Chevrolet Trailblazer and recently had the spark plugs replaced. After that, my vehicle triggered an O2 sensor fault with code P1133. I purchased a new Bosch downst...
2004 Chevy Trailblazer | P11332000 Chevy Silverado 2500 6.0L Engine with P0158, P1153, and P1133 OBD2 Fault Codes - Diagnosis and Fixes
Hello, I'm experiencing three OBD2 fault codes on my 2000 Chevy Silverado 2500 6.0L diesel engine: P0158, P1153, and P1133. The truck drives poorly—feeling sluggish and unrespo...
2000 Chevy Silverado 2500 6.0 | P01581997 Sunfire 2.4L - Troubleshooting P1133, P0335, and P0342 OBD2 Fault Codes
Hi everyone, I'm looking for guidance on how to troubleshoot the following OBD2 fault codes on my 1997 Sunfire 2.4L: P1133 (Coolant Temperature Sensor Circuit Range/Performance)...
97 2.4 | P03352000 Chevrolet Blazer P0134 and P1133 Error Codes: O2 Sensor Fix Guide
I recently purchased a 2000 Chevrolet Blazer with approximately 60-70 miles on the odometer. After driving it briefly, two diagnostic error codes appeared: P0134 and P1130. The ...
2000 chevrolet blazer | P0134Oxygen Sensor Issue with P1133 Code in 2003 Isuzu Rodeo 6-Cylinder
I recently replaced the oxygen sensor for Bank 1 Sensor 1 (right side) on my 2003 Isuzu Rodeo 6-cylinder model, but the P1133 fault code has persisted after 2 to 3 months. The c...
Isuzu Rodeo | P11332004 GMC Sierra P0131, P138, P171, P1133 - Upper Plenum Needed? Diagnosis Question
I recently had a diagnostic check on my 2004 GMC Sierra, and the shop reported several trouble codes: P0131, P138, P171, and P1130. They advised replacing the upper plenum as pa...
2004 GMC Sierra | P01311999 Toyota Camry P0171 and P1133 Diagnosis: Fuel Lean and O2 Sensor Circuit Issues
Hello, I own a 1999 Toyota Camry that runs smoothly under normal conditions, but the check engine light has recently come on. The diagnostic trouble codes displayed are P0171 (F...
1999 Toyota Camry | P01711999 Malibu 3.1L Engine Multiple Fault Codes: PO101, PO131, PO137, PO300, P1133 - Diagnosis and Fixes
I plan to clean the Mass Air Flow (MAF) sensor to resolve the PO101 and P113-3 fault codes related to airflow detection. The vehicle has 120,000 miles and may still have origin...
1999 Malibu 3.1 | P1133P1133 OBD2 Fault Code: Can Overfilling Engine Oil Cause It in a 1997 Chevrolet Cavalier?
Can overfilling engine oil cause the P1133 diagnostic trouble code (DTC) in a 1997 Chevrolet Cavalier? The P1133 code indicates insufficient switching of the oxygen sensor 1, wh...
Cavalier | P1133P1133 on 97 Chevy van 5.7L
I tuned up this van last May with 100k + miles. Big improvement but still got P1133. Replaced bank 1 sensor 1 and all was well until last month. Started spitting and coughing wh...
97 Chevy van 5.7L | P1133P1133 O2 Sensor Location and Replacement Guide for 2001 Buick Regal 3800 Engine
I'm looking for information about the P1133 fault code on my 2001 Buick Regal with a 3800 engine. This code relates to an oxygen (O2) sensor. Where is this sensor located? What ...
2001 Buick Regal | P11332005 Chevrolet Silverado OBD2 Codes 0171, 0131, 0300, 1133: Lean Bank 1, O2 Sensor Issues, Misfire Diagnosis
Hello everyone, My 2005 Chevrolet Silverado has a check engine light activated with the following OBD2 diagnostic codes: - 0171: System too lean (Bank 1) - 0131: O2 sensor circ...
05 Silverado | P0131Toyota RAV4 1999 - P0401 and P1133 Fault Codes: Diagnosis and Solutions
My 1999 Toyota RAV4 has the check engine light on, with fault codes P0401 and P1135. I understand that P1133 refers to the oxygen sensor (O2) for Bank 1 Sensor 1, but my Haynes ...
Toyota RAV4 | P0401Audi 2.8L 5-Speed 1998 - Troubleshooting P1130, P1133, P1128, and P1137 Fuel Trim & O2 Sensor Codes
Seeking expert advice on diagnosing and resolving the following OBD-II fault codes in my 1998 Audi 2.8L 5-speed manual transmission vehicle: P1130, P1133, P1-128, and P1137. The...
Audi 2.8 5 spd 1998 | P11281999 Toyota Camry 2.2L Engine Code P1133 - Front O2 Sensor Replacement Guide
My 1999 Toyota Camry 2.2L engine light came on at 108,000 miles. After connecting a code scanner, I found the fault code P1133, which indicates a problem with the front oxygen s...
Camry 1999 2.2 | P113399 Tahoe Rough Idle with DTC 171 and 1133 - Troubleshooting Guide
Jeff, after over six years of moderating automotive forums, I've learned that no matter how clearly we explain technical issues, some users struggle with reading, communication,...
99 Tahoe | P1133Practical workflow for fault-code troubleshooting
Start by confirming battery voltage and reading freeze-frame data, then inspect wiring and connectors before replacing parts. If the code returns after clearing, record the exact driving or idling condition when it reappears. Prefer case threads with complete repair feedback, because confirmed outcomes provide stronger guidance than one-time symptom descriptions. Following a step-by-step workflow reduces repeated repairs and lowers total diagnosis time.