P11CE Possible Causes

• Faulty accelerator pedal
• Accelerator pedal harness is open or short-circuited
• Poor electrical connection of the accelerator pedal circuit
• Faulty accelerator pedal module

How is code P11CE repaired?

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)

P11CE Meaning

The accelerator pedal position is separately monitored by 2 individual sensors. Two sensors are used to ensure redundancy, implement monitoring functions, and facilitate malfunction detection. The sensors record the accelerator pedal travel as angular deflection, with data transmitted directly to the engine management control unit as analog linear voltage curves for the pedal angle. The total pedal travel is mechanically expressed as 16° ± 0.5°.
Each change in accelerator pedal position is transmitted to the engine management computer with a maximum delay of 50 milliseconds. The sensor signals are transmitted in analog form. The engine management control unit monitors both sensor input signals and compares them for plausibility (factors such as mutual synchrony, linearity, etc.).
The digital motor electronics (DME) diagnose the voltage at sensor pedal 1 of the accelerator pedal module. The diagnostic trouble code (DTC) is detected if the voltage at pedal sensor 1 is below a lower threshold value. Lower threshold value: 0.51 V.

P11D7 Possible Causes

• Faulty nitrogen oxide (NOx) sensor
• Nitrogen oxide (NOx) sensor harness is open or shorted
• Poor electrical connection in the nitrogen oxide (NOx) sensor circuit

How to Fix Code P11D7?

Start by checking the “possible causes” listed above. Visually inspect the corresponding cable 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)

P11D7 Meaning

The reduction system uses two nitrogen oxide (NOx) sensors to monitor the amount of NOx in the engine exhaust gases. The first sensor is located at the turbocharger outlet and monitors the engine’s NOx level. The second NOx sensor is located between the selective catalytic reduction (SCR) and the diesel particulate filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the Engine Control Module (ECM) with information about the exhaust oxygen level during DPF regeneration.
Each NOx sensor contains a sensing cell, a pumping cell, and a heater. An exhaust gas sample passes through a diffusion gap between the sensing cell and the pumping cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit inside the sensor controls the pump current through the pumping cell to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the NOx concentration in the exhaust.
The ECM varies the amount of diesel exhaust fluid (DEF) or reductant added by varying the duty cycle of the reductant injector in response to changes in engine exhaust NOx levels.
Intelligent NOx sensors consist of two components, the NOx module and the NOx sensor element, which are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The intelligent NOx sensor module communicates the condition to the ECM via the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

Possible Causes of P11DB

• Faulty nitrogen oxide (NOx) sensor
• Nitrogen oxide (NOx) sensor harness is open or shorted
• Poor electrical connection in the nitrogen oxide (NOx) sensor circuit

How is P11DB Code Repaired?

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)

Meaning of P11DB

The reduction system uses two nitrogen oxide (NOx) sensors to monitor the amount of NOx in the engine exhaust gases. The first sensor is located at the turbocharger outlet and monitors the engine’s NOx level. The second NOx sensor is located between the selective catalytic reduction (SCR) and the diesel particulate filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the engine control module (ECM) with information about the exhaust oxygen level during DPF regeneration.
Each NOx sensor contains a sensing cell, a pumping cell, and a heater. A sample of exhaust gas passes through a diffusion gap between the sensing cell and the pumping cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit inside the sensor controls the pump current through the pumping cell to maintain a constant voltage in the sensing cell. The amount of current needed to maintain the reference voltage in the sensing cell is proportional to the NOx concentration in the exhaust.
The ECM varies the amount of diesel exhaust fluid (DEF) or reductant added by varying the duty cycle of the reductant injector in response to changes in engine exhaust NOx levels.
The smart NOx sensors consist of two components, the NOx module and the NOx sensor element, which are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The smart NOx sensor module communicates the condition to the ECM via the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

P11DB CHEVROLET Possible Causes

• Faulty nitrogen oxide (NOx) sensor
• Nitrogen oxide (NOx) sensor harness is open or shorted
• Poor electrical connection in the nitrogen oxide (NOx) sensor circuit

How to Fix P11DB CHEVROLET 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)

P11DB CHEVROLET Meaning

The reduction system uses two nitrogen oxide (NOx) sensors to monitor the amount of NOx in the engine exhaust gases. The first sensor is located at the turbocharger outlet and monitors the engine’s NOx level. The second NOx sensor is located between the selective catalytic reduction (SCR) and the diesel particulate filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the engine control module (ECM) with information about the exhaust oxygen level during DPF regeneration.
Each NOx sensor contains a sensing cell, a pump cell, and a heater. A sample of exhaust gas passes through a diffusion gap between the sensing cell and the pump cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit inside the sensor controls the pump current through the pump cell to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the NOx concentration in the exhaust.
The ECM varies the amount of diesel exhaust fluid (DEF) or reductant added by varying the duty cycle of the reductant injector in response to changes in engine exhaust NOx levels.
Smart NOx sensors consist of two components, the NOx module and the NOx sensor element, which are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The smart NOx sensor module communicates the condition to the ECM via the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

P11DB GMC Possible Causes

• Faulty nitrogen oxide (NOx) sensor
• Nitrogen oxide (NOx) sensor harness is open or shorted
• Poor electrical connection in the nitrogen oxide (NOx) sensor circuit

How is P11DB GMC Code Repaired?

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)

P11DB GMC Meaning

The reduction system uses two nitrogen oxide (NOx) sensors to monitor the amount of NOx in the engine exhaust gases. The first sensor is located at the turbocharger outlet and monitors the engine’s NOx level. The second NOx sensor is located between the selective catalytic reduction (SCR) and the diesel particulate filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the engine control module (ECM) with information about the exhaust oxygen level during DPF regeneration.
Each NOx sensor contains a sensing cell, a pump cell, and a heater. An exhaust gas sample passes through a diffusion gap between the sensing cell and the pump cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit inside the sensor controls the pump current through the pump cell to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the NOx concentration in the exhaust.
The ECM varies the amount of diesel exhaust fluid (DEF) or reductant added by varying the duty cycle of the reductant injector in response to changes in engine exhaust NOx levels.
Intelligent NOx sensors consist of two components, the NOx module and the NOx sensor element, which are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The intelligent NOx sensor module communicates the condition to the ECM via the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

Possible Causes of P11DC

• Faulty nitrogen oxide (NOx) sensor
• Nitrogen oxide (NOx) sensor harness is open or shorted
• Poor electrical connection in the nitrogen oxide (NOx) sensor circuit

How is Code P11DC Repaired?

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)

P11DC Meaning

The reduction system uses two nitrogen oxide (NOx) sensors to monitor the amount of NOx in the engine exhaust gases. The first sensor is located at the turbocharger outlet and monitors the engine’s NOx level. The second NOx sensor is located between the selective catalytic reduction (SCR) and the diesel particulate filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the engine control module (ECM) with information about the exhaust oxygen level during DPF regeneration.
Each NOx sensor contains a sensing cell, a pumping cell, and a heater. An exhaust gas sample passes through a diffusion gap between the sensing cell and the pumping cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit inside the sensor controls the pump current through the pumping cell to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the NOx concentration in the exhaust.
The ECM varies the amount of diesel exhaust fluid (DEF) or reductant added by varying the duty cycle of the reductant injector in response to changes in engine exhaust NOx levels.
Smart NOx sensors consist of two components, the NOx module and the NOx sensor element, which are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The smart NOx sensor module communicates the condition to the ECM via the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

P11DC CHEVROLET Possible Causes

• Faulty nitrogen oxide (NOx) sensor
• Nitrogen oxide (NOx) sensor harness is open or shorted
• Poor electrical connection in the nitrogen oxide (NOx) sensor circuit

How to Fix Code P11DC 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 engine service warning light soon)

P11DC CHEVROLET Meaning

The reduction system uses two nitrogen oxide (NOx) sensors to monitor the amount of NOx in the engine exhaust gases. The first sensor is located at the turbocharger outlet and monitors the engine’s NOx level. The second NOx sensor is located between the selective catalytic reduction (SCR) and the diesel particulate filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the engine control module (ECM) with information about the exhaust oxygen level during DPF regeneration.
Each NOx sensor contains a sensing cell, a pump cell, and a heater. An exhaust gas sample passes through a diffusion gap between the sensing cell and the pump cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit inside the sensor controls the pump current through the pump cell to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the NOx concentration in the exhaust.
The ECM varies the amount of diesel exhaust fluid (DEF) or reductant added by varying the duty cycle of the reductant injector in response to changes in engine exhaust NOx levels.
Smart NOx sensors consist of two components, the NOx module and the NOx sensor element, which are serviced as a unit. A circuit or performance condition with an NOx sensor is detected by the NOx sensor module. The smart NOx sensor module communicates the condition to the ECM via the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

P11DC GMC Possible Causes

• Faulty nitrogen oxide (NOx) sensor
• Nitrogen oxide (NOx) sensor harness is open or shorted
• Poor electrical connection in the nitrogen oxide (NOx) sensor circuit

How is GMC Code P11DC Repaired?

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 warning light soon service)

P11DC GMC Meaning

The reduction system uses two nitrogen oxide (NOx) sensors to monitor the amount of NOx in the engine’s exhaust gases. The first sensor is located at the turbocharger outlet and monitors the engine’s NOx level. The second NOx sensor is located between the selective catalytic reduction (SCR) and the diesel particulate filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the engine control module (ECM) with information about the exhaust oxygen level during DPF regeneration.
Each NOx sensor contains a sensing cell, a pumping cell, and a heater. An exhaust gas sample passes through a diffusion gap between the sensing cell and the pumping cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit inside the sensor controls the pump current through the pumping cell to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the NOx concentration in the exhaust.
The ECM varies the amount of diesel exhaust fluid (DEF) or reductant added by varying the duty cycle of the reductant injector in response to changes in engine exhaust NOx levels.
Intelligent NOx sensors consist of two components, the NOx module and the NOx sensor element, which are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The intelligent NOx sensor module communicates the condition to the ECM via the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

P1200 Possible Causes

• Faulty fuel injector
• Fuel injector harness is open or shorted
• Poor electrical connection in the fuel injector circuit

How is Code P1200 Repaired?

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)

P1200 Meaning

While the engine is running, the Powertrain Control Module (PCM) detects an incorrect voltage level on one or more fuel injector control circuits for more than 5 seconds.

P1200 AUDI Possible Causes

• Check the turbocharger recirculation valve for mechanical failure

How to Fix P1200 AUDI 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 engine service warning light soon)

P1200 AUDI Meaning

Turbocharger recirculation valve mechanical malfunction is the generic description for Audi P1200 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 P1200 OBDII code.