P1138 OBD Trouble Code

8 results found

P1138 - Audi
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Long term fuel trim, idling, Bank 2 - system too lean

Cause

Fuel pressure/pump, injector(s), intake/ exhaust leak, AIR system, hose leak

P1138 - Ford
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Lack of HO2S Switches, Sensor at Rich Limit Conditions

Location Bank 1 Sensor 2
Cause

Engine running in closed loop, then the PCM detected that the HO2S-12 signal did not switch because the fuel control system is at its rich limit

P1138 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

HO2S High Voltage During Decel Fuel Cutoff Conditions

Cause

DTC P0105, P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0300, P0336, P0440, P0446, P0452, P0453, P0506, P0507, P0601, P0602 and P1441 not set, ECT input over 167°F, engine runtime over 10 seconds, fuel level over 10%, DFCO not on, and the PCM detected the HO2S-12 signal was over 648 mv for 10 seconds. /Vote: This test runs for 11 seconds after a 10 second delay.

P1138 - Jaguar
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Heated oxygen sensor (HO2S) cylinders 1, 2, 3 - indicates rich

Location Sensor 2
Cause

Wiring, HO2S

P1138 - Mazda
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Heated oxygen sensor (HO2S) adaptive limit achieved

Location Rear
Cause

Wiring, HO2S, exhaust system, ECM

P1138 - Mercedes-Benz
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Heated oxygen sensor (HO2S) 2 - range/ performance problem

Cause

Wiring, HO2S

P1138 - Nissan
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Intake manifold air control solenoid - circuit malfunction

Cause

Wiring, intake manifold air control solenoid, intake manifold air control actuator position sensor, ECM

P1138 - Volkswagen
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Long term fuel trim, idling, system too lean

Location Bank 2
Cause

Fuel pressure/pump, injector(s), intake/ exhaust leak, AIR system, hose leak

Try also: https://www.obd-codes.com/p1138