I just took my 93 volvo 240 into get smogged and everything passed except when the key is turned to the "on" position the check engine light does not come on, but all the rest of the dash lights work,

SOURCE: I have a check engine light on

code p2404 is from a none volvo tester it would convert over to volvo code ecm 432a ,leak diag. pump failure,now dont play with it driving should be ok but you should take it to the dealer or a volvo only shop and read codes and fix it when your ready

SOURCE: Volvo 240 reverse lights don't work

Hi Sir

Checked the switch and plug? here's how :)

Yes it is the reverse light switch which is hooked up to your gearbox which needs to be replaced. Also it could be the plug going into this switch is a bit dirty or thorn (due to engine temperature and time wear) which in that case means that it needs to be fixed before replacing the switch.

Checking its actually the swtich so you don't buy it for nothing :)

Just to make sure that the circuitry is ok. Go to the gearbox (if it is front wheel drive transverse engine you wont need to go underneath) check where the gearbox and linkages are close to the revers there should be a switch n plug hooked up to it. Unplug it put in a piece of wire to short circuit both wires. Then turn the ignnition key on and if your circuitry is fine the lights should go on :) This means that its the switch for sure :) I hope that this helped your problem :)

CHEERS

SOURCE: 2000 Volvo S80 indicator lights & their funct. not wrking

Your CCM (Climate Control Module) is dead, or asleep. Look in the fuse box at the left end of the dashboard and pull the fuse and see if it resets the CCM. The module may need to be reprogrammed or replaced.

My suggestion is that you take this to a Volvo mechanic, one who has experience with working on these 1999- Volvo models. They have a networked computer system that requires special tools to diagnose and download software into the modules.

Also, it is a good idea to have them perform a total software upgrade, it will address many issues, and may prevent other issues from occurring.

Bret
RepairPal.com

Azhar Mastan

• 90 Answers
• Posted on Aug 03, 2009

SOURCE: weak engine turnover / shaking engine

There could be a few possibilities:
1. Air Mass Sensor
2. Ignition Circuit Units
3. Dirty Idle Valve
4. Dirty Throttle Body
4. Voltage Regulator

Check the above one after another.

SOURCE: Volvo S70 Alarm has become disabled

I HAD THIS PROBLEM ON MINE,TRY CLOSING THE BONNET FIRMLY (SLAM IT SHUT) TO SET THE BONNET SENSOR SWITCH PROPERLY.