VOLVO
ECM-959F - Accelerator pedal (AP) position sensor. Faulty signal. Intermittent fault
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Ten kod błędu ma różne znaczenie w zależności od modelu, rocznika lub silnika. Wybierz znaczenie, które dotyczy Twojego samochodu.
Dotyczy następujących modeli:
5 modeliC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S70 (1997–2000), V70 (1997–2000), V70 XC (1998–2000)
Pokaż modele wg rocznika i silnika (10)
- Volvo C70 Cabriolet (1998–2005)1999, 2001–2002
- Volvo C70 Cabriolet (1998–2005)2000Wszystkie silniki oprócz: B5244S
- Volvo C70 Coupé (1998–2002)1999Wszystkie silniki oprócz: B5254S DENSO
- Volvo C70 Coupé (1998–2002)2000Wszystkie silniki oprócz: B5244S
- Volvo C70 Coupé (1998–2002)2001–2002
- Volvo S70 (1997–2000)1999Tylko silnik: B5204T3, B5204T4, B5234T3, B5234T7, B5254T
- Volvo S70 (1997–2000)2000Tylko silnik: B5204T3, B5204T4, B5234T3, B5234T7, B5244T
- Volvo V70 (1997–2000)1999Tylko silnik: B5204T3, B5204T4, B5234T3, B5234T7, B5234T8, B5254T
- Volvo V70 (1997–2000)2000Wszystkie silniki oprócz: B5244S, B5244S2, B5244SG, B5244SG2, D5252T MSA 15.8
- Volvo V70 XC (1998–2000)1999–2000
Co oznacza ten kod błędu?
The fault is intermittent, meaning it has occurred at some point but may not be present now. The engine control module (ECM) compares the analogue signal from the accelerator pedal sensor with the PWM signal that the throttle module sends over the CAN network. If they differ too much for a longer time while engine speed is high, the code is stored.
Możliwe przyczyny
- Loose connections or contact resistance on the digital PWM signal wire
- Interference on the CAN signal wires
- The PWM wire between the engine control module and the throttle module is faulty
- Defective electronic throttle module
Co możesz zrobić
- 1Read the fault code counter and freeze-frame values. They show how often the fault has occurred and the conditions when it was first detected
- 2Inspect the connectors on the PWM wire to the throttle module. Loose contact or oxidation can cause faults that come and go
- 3If you have a diagnostic tool: follow the analogue and PWM pedal values in live data while the pedal moves, and see whether they differ in an irregular way
- 4Check the CAN wires for chafing and contact problems, since interference there can affect the signal
- 5After repair: clear the code and let the ignition stay off for a while before test driving, so the throttle module resets
Objawy, które możesz zauważyć2
- Poor accelerator pedal response
- Cruise control does not work at all
Na co może wpływać usterka3
- The throttle closes when braking, and the pedal position is ignored
- Cruise control is switched off for the driving cycle in which the fault was detected
- After a restart the function is back, if the fault is no longer active
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.