P1230
Read the instructions below then start the fault diagnostic procedure.
Symptom: CHECK ENGINE. Idling speed incorrect. Starting problems, especially when engine is cold Cruise control not working.
| P1230 |
Throttle Position Sensor 1 and 2 Circuit. Sum Out of Range.
(Faulty signal from throttle disc position sensor)
Fault symptom
| • |
CHECK ENGINE.
|
|
| • |
Idling speed incorrect.
|
|
| • |
Starting problems, especially when engine is cold
|
|
| • |
Cruise control not working.
|
|
| Note | ||
|
Diagnosis has been improved in more recent software which means it is no longer necessary to change the throttle body. The software providing enhanced diagnosis is available for all model years and engine variants. |
||
|
The throttle body must be reset mechanically following SPS programming (Service Programming System). If this is not done, other DTCs will be generated after several running cycles. |
||
|
MY02 and later vehicles have this software. Perform regular fault diagnosis. |
On-Board Diagnostics
Type of diagnosis:| - |
Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
|
|
Enable criteria:
| - |
Ignition in ON position.
|
|
Fault criteria:
| - |
The sum of voltages from throttle position sensors 1 and 2 exceeds 5.70 V for more than 0.8 s or is less than 4.59 V for more than 0.3 s.
|
|
Dependents:
| - |
None.
|
|
System reaction to a fault:
| - |
Throttle control goes into limp-home mode. The limp-home solenoid will be activated 5 times in succession each time the ignition is turned on until the fault has been rectified and the trouble codes cleared.
|
|
OK report:
| - |
Accelerator pedal has been depressed at some time and then fully released. 120 s has expired since then without fault criteria being fulfilled.
|
|
Fault handling: (See “Fault diagnosis, general” for more information.)
| - |
CHECK ENGINE goes on immediately and can be turned off only by clearing the trouble codes.
|
|
Diagnostic help
Fault diagnosis relates to incorrect signals from the throttle disc position sensor and its wiring.
Functions in the diagnostic tool related to the fault:
| • |
Throttle Position Sensor 1, unit V.
|
|
| • |
Throttle Position Sensor 2, unit V.
|
|
See also description of read value under "Read Values" menu for more information.
Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Check switches, connectors and crimp connections for oxidation, withdrawn pins and pin clamping force.Software table
Perform SPS programming (Service Programming System) if T7 has an earlier software version than that stated below. The software below has the updated diagnostic procedure for P1230.|
Model year
|
Engine type
|
Software version
|
Software number
|
|
98½
|
9-5 B235E OBD2 US
|
e925635c.53e
|
5383369
|
|
98½
|
9-5 B235E ORVR US
|
ea1y635c.53g
|
5383377
|
|
99
|
9-5 B235E RU
|
ea1y635c.531
|
5383351
|
|
99, 00
|
9-5 B205E RU
|
ea1yza9c.47m
|
5383310
|
|
00, 00½
|
9-5 B235R M1 EU
|
eb30za9c.56l
|
5383583
|
|
00, 00½
|
9-5 B235E M1 EU
|
eb30za9c.53x
|
5383542
|
|
00, 00½
|
9-5 B235E LEV EU
|
eb30za9c.53h
|
5383518
|
|
00, 00½
|
9-5 B235E 163HP EU
|
eb30za9c.53i
|
5383492
|
|
00, 00½
|
9-5 B235E LRV TUN US
|
eb30za9c.534
|
5383526
|
|
00, 00½
|
9-5 B235R LEV US
|
eb30za9c.56c
|
5383575
|
|
00, 00½
|
9-5 B235R LEV EU
|
eb30za9c.56d
|
5383559
|
|
00, 00½
|
9-5 B235R LEV EU
|
eb30za9c.56k
|
5383567
|
|
00, 00½
|
9-5 B235E LEV US
|
eb30za9c.53c
|
5383534
|
|
00½
|
9-5 B235E GAS EU
|
ec0x633c.532
|
5383807
|
|
98, 99, 00
|
9-5 B205E 190HP EU
|
ea1yza9c.47b
|
5383294
|
|
98, 99, 00
|
9-5 B205E TUN EU
|
ea1yza9c.47h
|
5383328
|
|
99, 00, 00½
|
9-5 B235E LEV RU
|
eb30za9c.53w
|
5383500
|
|
98, 99, 00, 00½
|
9-5 B205E EU
|
ea1yza9c.47d
|
5383302
|
|
98, 99, 00, 00½
|
9-5 B235E 163HP EU
|
ea1y635c.53f
|
5383336
|
|
01
|
9-5 B235R EC2000 M1 EU
|
ec0x633c.56m
|
5383856
|
|
01
|
9-5 B235R EC2000 EU
|
ec0x633c.56e
|
5383849
|
|
01
|
9-5 B235R LEV US
|
ec0x633c.56f
|
5383872
|
|
01
|
9-5 B235R EC2000 RW
|
ec0x633c.56g
|
5383864
|
|
01
|
9-5 B205E EC2000 TUN RW
|
ec0x633c.47x
|
5383773
|
|
01
|
9-5 B235E EC2000 EU
|
ec0x633c.53j
|
5383799
|
|
01
|
9-5 B205E EC2000 TUN EU
|
ec0x633c.47n
|
5383765
|
|
01
|
9-5 B235E EC2000 M1 EU
|
ec0x633c.53z
|
5383815
|
|
01
|
9-5 B235E EC2000 163HK EU
|
ec0x633c.53l
|
5383781
|
|
01
|
9-5 B235E LEV US
|
ec0x633c.53k
|
5383831
|
|
01
|
9-5 B235E EC2000 RW
|
ec0x633c.53m
|
5383823
|
|
01
|
9-5 B205E EC2000 RW
|
ec0x633c.47p
|
5383757
|
|
01
|
9-5 B205E EC2000 EU
|
ec0x633c.47o
|
5383740
|
|
01
|
9-5 B205E EC2000 TUN RW
|
ed0t62dc.47l
|
5382858
|
|
02
|
9-5 B205E EC2000 RW
|
ed0t62bc.47j
|
5382833
|
|
02
|
9-5 B235R LEV US
|
ed0ty3oc.56j
|
5383252
|
|
02
|
9-5 B235E EC2000 RW
|
ed0ty3bc.53r
|
5382882
|
|
02
|
9-5 B235E EC2000 EU
|
ed0ty3ac.53q
|
5382866
|
|
02
|
9-5 B235R EC2000 EU
|
ed0tc44c.56h
|
5382890
|
|
02
|
9-5 B205E EC2000 EU
|
ed0t62ac.47i
|
5382825
|
|
02
|
9-5 B235R EC2000 RW
|
ed0tc45c.56i
|
5382908
|
|
02
|
9-5 B235E LEV US
|
ed0ty3nc.53s
|
5383245
|
|
02
|
9-5 B235E EU
|
ea1y635c.53d
|
5383344
|
|
02
|
9-5 B235E GAS EU
|
ed0ty39c.533
|
5382874
|
|
02
|
9-5 B205E EC2000 TUN EU
|
ed0t62cc.47k
|
5382841
|
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