P1158 ACURA – Low Voltage at Terminal of Air/Fuel Ratio Sensor 1

P1158 ACURA Possible Causes

  • Faulty Air/Fuel Ratio Sensor 1
  • Air/Fuel Ratio Sensor 1 harness is open or shorted
  • Air/Fuel Ratio Sensor 1 circuit poor electrical connection

How to Fix Code P1158 ACURA?

Start by checking the “Possible Causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

If the heater is not activated or if the voltage at the Engine Control Module (ECM) terminals is a defined value or less for at least a defined period of time when power is supplied to the A/F sensor heater (sensor 1), a malfunction is detected and the code is stored.

Possible Symptoms

  • Check Engine Light On (or Service Engine Soon Warning Light)

P1158 ACURA Meaning

The Air/Fuel Ratio (A/F) Sensor 1 is installed in the exhaust system and detects the oxygen concentration in the exhaust gases. The A/F sensor sends the output voltage to the Engine Control Module (ECM). A heating element for the sensor element is built into the A/F sensor (sensor 1). It is activated and heats the sensor to stabilize and speed up the detection of oxygen concentration by controlling the current flowing through the heater. The current increase stabilizes when the voltage applied to the element electrode reaches a certain range because the amount of oxygen that is transported through the diffusion layer is limited. The current amperage is proportional to the oxygen concentration in the exhaust gases, so the air/fuel ratio is detected by measuring the current amperage. The ECM compares a defined target air/fuel ratio with the detected air/fuel ratio and controls the fuel injection timing.
If the A/F sensor (sensor 1) voltage is low, the air/fuel ratio is lean and the ECM uses A/F feedback control to issue a Rich command. If the A/F sensor (sensor 1) voltage is high, the air/fuel ratio is rich and the ECM uses A/F feedback control to issue a Lean command.

P1158 AUDI – Implausible Signal from Intake Manifold Absolute Pressure Sensor

P1158 AUDI Possible Causes

  • Faulty manifold absolute pressure sensor
  • Manifold absolute pressure sensor harness is open or shorted
  • Poor electrical connection in manifold absolute pressure sensor circuit
 

How to Fix AUDI P1158 Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

 
 

Possible Symptoms

  • Engine light on (or service engine soon warning light)
 

P1158 AUDI Meaning

Manifold Absolute Pressure Sensor Implausible Signal is the generic description for Audi P1158 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the Audi P1158 OBDII code.

P1158 BMW – Fuel Adaptation Additive, Bank 1 Low

P1158 BMW Possible Causes

  • Air leaks
  • Faulty mass air flow (MAF) sensor
  • Faulty oxygen sensor, bank 1
  • Low fuel pressure
  • Faulty spark plugs
  • Faulty fuel injectors

How to Fix BMW P1158 Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1158 BMW Meaning

Short-term fuel trim (STFT) is a value that indicates how the engine control module (ECM) adjusts the factory-programmed fuel map. The fuel map is a lookup table that the controller references. This is used to determine the correct amount of fuel to inject. This amount depends on the speed and load conditions monitored on the vehicle. The (STFT) value changes based on the fuel map weighting cell the engine is operating under in terms of speed and load conditions.
The oxygen sensor is a key element in calculating fuel trim. If the oxygen sensor indicates a lean mixture, the (STFT) will be increased above the typical value. If the oxygen sensor indicates a rich mixture, the (STFT) will be reduced below the typical value. During normal operation, fuel trim values will vary between a maximum of 10% and -10%. (STFT) values that exceed this range should be investigated.

P1158 BUICK – HO2S Bank 2 Sensor 2 Rich or High Voltage

P1158 BUICK Possible Causes

  • Faulty O2 sensor heater, bank 2 sensor 2
  • O2 sensor heater bank 2 sensor 2 harness is open or shorted
  • O2 sensor heater circuit, bank 2, sensor 2 circuit poor electrical connection
 

How to Fix Code P1158 BUICK?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

 
 

Possible Symptoms

  • Engine light on (or service engine soon warning light)
 

P1158 BUICK Meaning

HO2S Bank 2 Sensor 2 Rich or High Voltage is the generic description for Buick code P1158, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about OBDII code P1158 Buick.

P1158 CHEVROLET – HO2S Bank 2 Sensor 2 Rich or High Voltage

P1158 CHEVROLET Possible Causes

  • Faulty O2 sensor heater, Bank 2 Sensor 2
  • O2 sensor heater Bank 2 Sensor 2 harness is open or shorted
  • O2 sensor heater Bank 2 Sensor 2 circuit poor electrical connection

How to Fix Code P1158 CHEVROLET?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Engine Light On (or Service Engine Soon Warning Light)

P1158 CHEVROLET Meaning

HO2S Bank 2 Sensor 2 Rich or High Voltage is the generic description for Chevrolet code P1158, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the Chevrolet P1158 OBDII code.

P1158 FORD – Lack of Heated Oxygen Sensor Switches, Row 2 Sensor 2 Indicates Rich

P1158 FORD Possible Causes

  • Exhaust gas leaks
  • Faulty Heated Oxygen Sensor 2 (HO2S2) (downstream), bank 2
  • Heated Oxygen Sensor 2, bank 2, harness is open or shorted
  • Poor electrical connection in the Heated Oxygen Sensor 2, bank 2 circuit
  • Inappropriate fuel pressure
  • Faulty fuel injectors

How to Fix Code P1158 FORD?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Engine light on (or service engine soon warning light)

P1158 FORD Meaning

The Heated Oxygen Sensor 2 (HO2S2) (downstream), after the Three-Way Catalyst (manifold), monitors the oxygen level in the exhaust gases on each bank. For optimal catalyst operation, the air-fuel mixture (air-fuel ratio) must remain close to the ideal stoichiometric ratio. The HO2S2 output voltage changes abruptly near the stoichiometric ratio. The Powertrain Control Module (PCM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S2 generates a voltage between 0.1 and 0.9 V in response to the oxygen in the exhaust gases. If the oxygen in the exhaust gases increases, the air-fuel ratio becomes lean. The PCM interprets Lean when the HO2S2 voltage is below 0.45 V. If the oxygen in the exhaust gases decreases, the air-fuel ratio becomes rich. The PCM interprets Rich when the HO2S2 voltage is above 0.45 V.

P1158 GMC – Bank 2 Sensor 2 HO2S Rich or High Voltage

P1158 GMC Possible Causes

  • Faulty O2 sensor heater, Bank 2 Sensor 2
  • Open or short circuit in the O2 sensor heater wiring, Bank 2 Sensor 2
  • O2 sensor heater circuit, Bank 2, poor electrical connection in Sensor 2 circuit
 

How to Fix GMC Code P1158?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

 
 

Possible Symptoms

  • Engine light on (or engine service warning light soon)
 

P1158 GMC Meaning

HO2S Bank 2 Sensor 2 rich or high voltage is the generic description for GMC code P1158, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about OBDII code P1158 GMC.

P1158 HONDA – Low Terminal Voltage of Air/Fuel Ratio Sensor 1

P1158 HONDA Possible Causes

  • Faulty Air/Fuel Ratio Sensor 1
  • Air/Fuel Ratio Sensor 1 harness is open or shorted
  • Poor electrical connection in the Air/Fuel Ratio Sensor 1 circuit

How to Fix Code P1158 HONDA?

Start by checking the “Possible Causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

A malfunction is detected and the code is stored if the heater element is not activated or if the voltage at the Engine Control Module (ECM) terminals is a specified value or less for at least a specified period of time when power is supplied to the A/F sensor heater (Sensor 1).

Possible Symptoms

  • Check Engine Light On (or Service Engine Soon Warning Light)

P1158 HONDA Meaning

The Air/Fuel Ratio (A/F) Sensor 1 is installed in the exhaust system and detects the oxygen concentration in the exhaust gases. The A/F sensor sends the output voltage to the Engine Control Module (ECM). A heating element for the sensor element is built into the A/F sensor (Sensor 1). It is activated and heats the sensor to stabilize and speed up the detection of oxygen concentration by controlling the current flowing through the heater. The current increase stabilizes when the voltage applied to the element electrode reaches a certain range because the amount of oxygen that passes through the diffusion layer is limited. The current amperage is proportional to the oxygen concentration in the exhaust gases, so the air/fuel ratio is detected by measuring the current amperage. The ECM compares a preset target air/fuel ratio with the detected air/fuel ratio and controls the fuel injection timing.
If the A/F sensor (Sensor 1) voltage is low, the air/fuel ratio is lean and the ECM uses A/F feedback control to issue a Rich command. If the A/F sensor (Sensor 1) voltage is high, the air/fuel ratio is rich and the ECM uses A/F feedback control to issue a Lean command.

P1158 LINCOLN – Lack of Heated Oxygen Sensor Switches, Row 2 Sensor 2 Indicates Rich

P1158 LINCOLN Possible Causes

  • Exhaust gas leaks
  • Faulty Heated Oxygen Sensor 2 (HO2S2) (downstream), Bank 2
  • Heated Oxygen Sensor 2, Bank 2, harness is open or shorted
  • Poor electrical connection in the Heated Oxygen Sensor 2, Bank 2, circuit
  • Inappropriate fuel pressure
  • Faulty fuel injectors

How to Fix Code P1158 LINCOLN?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Engine Light On (or Service Engine Soon Warning Light)

P1158 LINCOLN Meaning

The Heated Oxygen Sensor 2 (HO2S2) (downstream), after the Three-Way Catalyst (manifold), monitors the oxygen level in the exhaust gases on each bank. For optimal catalyst operation, the air-fuel mixture (air-fuel ratio) must remain close to the ideal stoichiometric ratio. The HO2S2 output voltage changes abruptly near the stoichiometric ratio. The Powertrain Control Module (PCM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S2 generates a voltage between 0.1 and 0.9 V in response to the oxygen in the exhaust gases. If the oxygen in the exhaust gases increases, the air-fuel ratio becomes lean. The PCM interprets Lean when the HO2S2 voltage is below 0.45 V. If the oxygen in the exhaust gases decreases, the air-fuel ratio becomes rich. The PCM interprets Rich when the HO2S2 voltage is above 0.45 V.

P1158 MAZDA – HO2S-22 Circuit Condition

P1158 MAZDA Possible Causes

  • Faulty HO2S-22
  • HO2S-22 harness is open or shorted
  • Poor electrical connection in HO2S-22 circuit

How to Fix Code P1158 MAZDA?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Technical Notes

The Engine Control Module (ECM) did not detect a rich signal during testing

Possible Symptoms

  • Engine light on (or service engine soon warning light)

P1158 MAZDA Meaning

The HO2S-22 circuit condition is the generic description for Mazda code P1158, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the Mazda P1158 OBDII code.