P0120 - accelerator 1 pedal signal
- Make
- Alfa Romeo
- Model
- 159 Factory Service Manual
- Year
- 2005–2011
- Section
- Examiner - diesel electronic management › P0120 - accelerator 1 pedal signal
Fault diagnosisP0120 - accelerator 1 pedal signal
P0120 - ACCELERATOR 1 PEDAL SIGNAL
The diagnostic equipment signals: Error P0120 (Accelerator pedal sensor 1).
This error is detected if, with fault code P0641 not recognized, the junction unit input voltage (Pin 9) is more than 4.67 V (positive short circuit) or less than 0.15 V (short circuit to earth or break in the circuit). As a result, the accelerator pedal does not work.
| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|---|---|---|---|
Connect the diagnostic equipment and select the Bosch EDC 16C39 electronic control unit, checking that none of the following errors are present: P0651 - Sensor power supply 2 | Move on to Step 1 | Error P0651 present | Proceed as instructed in the | |
| 1 | ACCELERATOR PEDAL CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
Check that the accelerator pedal is working properly | End of diagnosis |
Parts & tools for this job For 2005 Alfa Romeo 159
- PARTGlow plugsSearch: Alfa Romeo 159 2005 glow plugs
- TOOLGlow plug socketSearch: glow plug socket
- TOOLDiesel compression testerSearch: diesel compression tester
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.