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Chevrolet Impala

Fuel parameters

The Chevrolet Impala has 16 fuel parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Alcohol fuel percentage ALCH_PCTConfirmed

Indicates the percentage of alcohol contained in ethanol or methanol fuels, if used. For example, ethanol fuel (E85) normally contains 85% ethanol, in which case this parameter will display 85%

  • Request01 52
  • Service 01PID 52
  • Module7E0 → 7E8
  • Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2007, 2011.

  1. The parameter's name and its ID in the OBDb. Confirmed shows when a response from a real car confirms the parameter.
  2. The clutch mark shows a Connectable, a parameter that Pelican surfaces in its interface.
  3. The service and PID/DID asked for, the control module it's sent to, and how often Pelican asks.
  4. The reply's bytes. The parameter's bytes are blue. Bytes for other parameters in the same reply are grayed out. Hover over a byte to see the parameter it represents.
  5. Where the parameter is in the response, and how Pelican converts the raw value into a value.
  6. A real reply, decoded. The raw value comes first, then the reading.
  7. Which model years have tested this parameter.

Alcohol fuel percentage ALCH_PCTSAE J1979Confirmed

Indicates the percentage of alcohol contained in ethanol or methanol fuels, if used. For example, ethanol fuel (E85) normally contains 85% ethanol, in which case this parameter will display 85%

  • Request01 52
  • Service 01PID 52
  • Module7E0 → 7E8
  • Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2007, 2011.

Ethanol content of fuel IMPALA_ETHANOL_CONTENT_FUEL

  • Request22 00 52
  • Service 22DID 0052
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

In testing for 1988 to 1996, 2000 to 2020.

Fuel consumption rate IMPALA_FUEL_RATE

  • Request22 00 5E
  • Service 22DID 005E
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 500 ÷ 10000)
Range
0 to 3276.75 L
Unit
L

In testing for 1988 to 1996, 2000 to 2020.

Fuel injection, cylinder 1 IMPALA_FUEL_INJECTION_C1

  • Request22 20 AC
  • Service 22DID 20AC
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 10 ÷ 10000)
Range
0 to 65.535 ms
Unit
ms

In testing for 1988 to 1996, 2000 to 2020.

Fuel injection, cylinder 2 IMPALA_FUEL_INJECTION_C2

  • Request22 11 94
  • Service 22DID 1194
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 1000 ÷ 65535)
Range
0 to 1000 ms
Unit
ms

In testing for 1988 to 1996, 2000 to 2020.

Fuel injection, cylinder 3 IMPALA_FUEL_INJECTION_C3

  • Request22 11 95
  • Service 22DID 1195
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 1000 ÷ 65535)
Range
0 to 1000 ms
Unit
ms

In testing for 1988 to 1996, 2000 to 2020.

Fuel injection, cylinder 4 IMPALA_FUEL_INJECTION_C4

  • Request22 11 96
  • Service 22DID 1196
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 1000 ÷ 65535)
Range
0 to 1000 ms
Unit
ms

In testing for 1988 to 1996, 2000 to 2020.

Fuel injection, cylinder 5 IMPALA_FUEL_INJECTION_C5

  • Request22 11 97
  • Service 22DID 1197
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 1000 ÷ 65535)
Range
0 to 1000 ms
Unit
ms

In testing for 1988 to 1996, 2000 to 2020.

Fuel injection, cylinder 6 IMPALA_FUEL_INJECTION_C6

  • Request22 11 98
  • Service 22DID 1198
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 1000 ÷ 65535)
Range
0 to 1000 ms
Unit
ms

In testing for 1988 to 1996, 2000 to 2020.

Fuel remaining IMPALA_FLI

Pelican can show this parameter as the fuel tank level.

  • Request22 00 2F
  • Service 22DID 002F
  • Module7E0 → 7E8
  • Every30 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

In testing for 1988 to 1996, 2000 to 2020.

Fuel system 1 status FUELSYS1SAE J1979Confirmed

  • Request01 03
  • Service 01PID 03
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Unit
Named states
States
Raw valueStateMeaning
0OFFEngine is off
1OLOpen loop - has not yet satisfied conditions to go closed loop
2CLClosed loop - using oxygen sensor(s) as feedback for fuel control
4OL-DriveOpen loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
8OL-FaultOpen loop - due to detected system fault
16CL-FaultClosed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
32OL B2Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
64OL-Drive B2Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
128OL-Fault B2Open loop - due to detected system fault (Bank 2)

Confirmed for 2007, 2011. Supported for 1996, 2013 to 2014, 2016 to 2020.

Fuel system 2 status FUELSYS2SAE J1979Confirmed

  • Request01 03
  • Service 01PID 03
  • Module7E0 → 7E8
  • Every250 ms

Bits 8 to 15 of the reply, 8 bits.

Unit
Named states
States
Raw valueStateMeaning
0OFFEngine is off
1OLOpen loop - has not yet satisfied conditions to go closed loop
2CLClosed loop - using oxygen sensor(s) as feedback for fuel control
4OL-DriveOpen loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
8OL-FaultOpen loop - due to detected system fault
16CL-FaultClosed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
32OL B2Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
64OL-Drive B2Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
128OL-Fault B2Open loop - due to detected system fault (Bank 2)

Confirmed for 2007, 2011. Supported for 1996, 2013 to 2014, 2016 to 2020.

Fuel tank level FLISAE J1979Confirmed

Pelican can show this parameter as the fuel tank level.

  • Request01 2F
  • Service 01PID 2F
  • Module7E0 → 7E8
  • Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2018. Supported for 1996, 2019 to 2020.

Fuel tank pressure IMPALA_FUEL_TANK_P

  • Request22 F4 32
  • Service 22DID F432
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 33333.33333)
Range
0 to 1.96 psi
Unit
psi

In testing for 1988 to 1996, 2000 to 2020.

Fuel temperature IMPALA_FUEL_T

  • Request22 32 18
  • Service 22DID 3218
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 50 ÷ 100)
Range
0 to 127.5 °C
Unit
°C

In testing for 1988 to 1996, 2000 to 2020.

Total fuel consumption rate IMPALA_TOTAL_FUEL_CONSUMPTION_RATE

  • Request22 00 9D
  • Service 22DID 009D
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 200 ÷ 10000)
Range
0 to 1310.7 g/s
Unit
g/s

In testing for 1988 to 1996, 2000 to 2020.

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