Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer communications
18Original wording in English
CHEVROLET
18009 - Service Update. The bootloader version for the engine control module (ECM) was incorrectly released, and may result in a no-start or stall, and P062B, P0171/P0172, P1133/P2195/P2196 or P300 diagnostic trouble codes to set. Dealers are to inspect for part number and replace the ECM as needed.
CHEVROLET, GMC
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS ON HOW TO DIAGNOSE AND REPAIR VEHICLES WITH SERVICE ENGINE SOON OR DIAGNOSTIC TROUBLE CODE P0133 OR P1133. CHECK FOR THE POST AND PRE OXYGEN SENSOR CONNECTORS BEING SWAPPED. THE PRE SENSOR CONNECTED TO POST CONNECTOR AND POST SENSOR CO…
CADILLAC
This Preliminary Information communication provides information to the technician about vehicles that have Service Stabilitrak Message being displayed in the driver?s information center. Technician may find Diagnostic Trouble Code P1153, P1133, P1826, P1827, P2120, P2122, P2123, P2125, P2127, P2128, and P2138. Technician will ne…
CHEVROLET, PONTIAC, SATURN
SES LIGHT ILLUMINATED, DTC'S P0171, P0300, P1133 SET, REDUCED PERFORMANCE, HARD START, INTERMITTENT LACK OF POWER. *KB
Check vehicle applicability
25A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
HO2S Insufficient Switching Sensor 1
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.