P1138

Manufacturer-specific fault code

This code has different meanings depending on the manufacturer. Select your vehicle make below to view specific diagnosis and solutions:

Code breakdown

P — System

Powertrain (engine, transmission, fuel & emissions)

1 — Type

Manufacturer-specific

1 — Subsystem

Fuel and air metering

Fiat
Mancanza segnale sonda lambda bancata 1 sensore 2, la sonda indica miscela ricca
Buick Cadillac Chevrolet Chrysler GM GMC Oldsmobile Saturn
HO2S Bank 1 Sensor 2 Rich Or High Voltage
Ford Lincoln Mercury
Lack of Downstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1
BMW
O2 Sensor Heater Circuit Low Voltage Bank 1 Sensor 2
Jaguar
Lack Of HO2S12 Switches Sensor Indicates Rich
Mazda
HO2S Bank 1 Sensor 2 Signal Above 0.45v AF Ratio Too Rich
Volkswagen
Long Term Fuel Trim Add Fuel Bank 2 System Too Lean