7355 code(s) in this category. Page 49 of 307. Select one to see the detailed diagnosis.
Motor (P)
The current draw of the cooling fan exceeds the permitted maximum. Caused by a seized or worn fan motor or wir…
A fault is detected in the supply or ground path of the cooling fan circuit. Voltage drops or open ground prev…
A general electrical fault on EGR sensor B — second EGR sensor on dual-loop or HP/LP EGR systems. EGR mixes in…
The drive circuit of EGR throttle A is open. EGR throttles partially close intake to increase exhaust gas reci…
EGR throttle A is electrically OK but does not move as commanded. EGR mixes inert exhaust into intake to lower…
EGR A drive line stuck low — short to ground. EGR mixes inert exhaust into intake to lower combustion peak tem…
Exhaust pressure control valve A is mechanically stuck closed — backpressure runs away, can stall the engine.…
A general electrical fault on the position sensor of exhaust pressure control valve A.…
Position sensor reads in range but plausibility check fails. Wiring faults of this kind typically come from ch…
Position sensor below lower plausibility — short to ground. Wiring faults of this kind typically come from cha…
Position sensor above upper plausibility — open signal or short to B+. Wiring faults of this kind typically co…
Position sensor signal jumps or drops out intermittently. Wiring faults of this kind typically come from chafi…
EGR A drive line stuck high — short to B+. EGR mixes inert exhaust into intake to lower combustion peak temper…
AIR system flow on bank 1 is below threshold during the cold-start self-test — typically a clogged check valve…
AIR system flow on bank 2 is below threshold during the cold-start self-test — typically a clogged check valve…
The cooling fan is rotating faster than the commanded speed. The control unit measures the fan tachometer feed…
Cooling fan 1 is rotating slower than commanded. The ECU sees the tachometer feedback below the expected windo…
The ECU detected EVAP purge flow during a non-purge condition, or higher than commanded purge flow. Typical ca…
The evaporative emissions system measures purge flow either via a dedicated purge flow sensor or via short-ter…
The vent valve closes the EVAP canister to atmosphere during leak tests. The control line for that valve is sh…
Same as P0498 with the control line open or shorted to supply. The evaporative system captures fuel vapor from…
The exhaust-gas recirculation system has a second EGR loop (B) - typically used on engines with a dedicated lo…
Same as P049A but specifically with measured flow below the required rate - typically EGR valve sticking close…