Checking components, intake system

As described in the diagnostic trouble code information, this diagnostic trouble code is stored when the measured air mass in to the engine is below a lowest permitted air mass for a short time. The diagnostic trouble code may be stored alone, but the most common is that it exists as a subsequent problem of any another diagnostic trouble code.

If any of the diagnostic trouble codes ECM-1300, ECM-130A, ECM-901A, ECM-902A, ECM-903F, ECM-911A, ECM-912A, ECM-9150 and/or ECM-9160 are stored together with ECM-982A, continue troubleshooting according to any of these diagnostic trouble codes. Otherwise, continue as follows.

If there is no other diagnostic trouble code that indicates what may have caused the low air mass, then use the frozen values to try to determine when the problem occurred and what has caused the low air mass. Also check the counters to get an idea if it is likely that the problem can be recreated or not. If the counters show that the problem has occurred frequently in recent time, it is highly likely that the problem can be recreated during troubleshooting. If the counters show that the problem is extremely intermittent, it is not very likely that the problem can be recreated during troubleshooting.

A damage to following components or system would mean that the air mass becomes too low.

• Check the intake system for air leakage and loose charge-air pipe.
• Check that the intake air temperature (IAT) sensor and boost pressure sensor are correctly installed. Check for air leakage around the components. Note: Even extremely small air leaks can cause this diagnostic trouble code (DTC) to be stored.

For markets where upgraded software, released during year 2006 or later, is available, the solution may be to download the upgraded software. If the counters shows that the fault is intermittent and it is suspected that the fault occurs for a short time, the upgraded software will be of use as long as the faults do not occur for less than 0.6 seconds.

Remedy as necessary.

Other information 

• See Identifying upgraded software ECM/ETM
• See Checking wiring and terminals
• See Air leakage in the intake system, checking

Caution: In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed:

• Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM).
• Then turn on the ignition and turn it off again.
• Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly. If this is not done correctly, diagnostic trouble codes may remain even after deleting diagnostic trouble codes and any reconfiguration may remain, despite the problem being fixed.

• Continue 

  Refer to Information