13E
13E-29
P0234: Over Boost (warning lamp flashes: 54)
P0236: Boost Press SNSR (Plausi) (warning lamp flashes: 54)
P0237: Boost Press SNSR (Low) (warning lamp flashes: 32)
P0238: Boost Press SNSR (High) (warning lamp flashes: 32)
Generation condition Boost pressure is more than a regulated value the engine running.
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid sig-
nals are input).
Control effected by electronic control unit
• Injection quantity is limited.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
• Turbocharger control is stopped.
Possible causes • Mechanical failure of turbocharger
Generation condition Engine electronic control unit has judged that boost pressure sensor was faulty
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit
• Injection quantity is limited.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Possible causes
• Open-circuit or short-circuit of harness between engine electronic control unit
and Boost pressure sensor
• Malfunction of each connector
• Malfunction of Boost pressure sensor
• Malfunction of engine electronic control unit
Generation condition Boost pressure sensor voltage is at or below the specified value (0.3 V).
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit
• Injection quantity is limited.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Possible causes
• Open-circuit or short-circuit of harness between engine electronic control unit
and boost pressure sensor
• Malfunction of each connector
• Malfunction of boost pressure sensor
• Malfunction of engine electronic control unit
Generation condition Boost pressure sensor voltage is at or above the specified value (4.8 V).
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit
• Injection quantity is limited.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Possible causes
• Open-circuit or short-circuit of harness between engine electronic control unit
and boost pressure sensor
• Malfunction of each connector
• Malfunction of boost pressure sensor
• Malfunction of engine electronic control unit
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